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Stack overflow java

  • Stack overflow java. In case we are at Java 10 then the method Collectors. EnumSet and java. Mar 25, 2009 · Java 8 solution. Even when Java is taught at starting level, it is taught that pointers are not secure that's why they are not used in Java. As for integer exponentiation, unfortunately Java does not have such an operator. java database connectivity uses these to identify SQL Date and Timestamp. E. It is used to achieve fully abstraction and multiple inheritance in Java. exe" from there. To learn more, see our tips on writing great . So I ran it from the DOS prompt like this: java -jar Predit. Note: Install java and also set path in environment variables Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 4. The reason Java's hashing algorithm is weak is most evident in how it hashes Strings. Specification is JSR 310. The best approach to read a file in Java is to open in, read line by line and process it and close the strea // Open the file FileInputStream fstream = new FileInputStream("textfile. Let’s start with the basics. How exactly do I go ahead and do this? It is a straight-forward "1-dimensional" file, containing 100 numbers. 2 + 3 = 5 ---- Next level of the stack (continuing to resolve). Update/Answer: It turns out that IntelliJ 12 supports Java 8, which supports lambdas, and is "folding" Predicates and displaying them as lambdas. lang. Sep 3, 2008 · Crash course on stack/heap before we get to the Java implementation: Values go on and off the stack in a nice orderly fashion, like a stack of plates at a cafeteria. Then next time your "helloworld. Apr 7, 2020 · Across the software projects, we are using java. Time, java. err: Picked up JAVA_TOOL_OPTIONS: -Dfile. To learn more, see our tips on writing great Nov 21, 2010 · What is an elegant way to find all the permutations of a string. Nov 9, 2008 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Since Java 1. out. The CRaC (Coordinated Restore at Checkpoint) project from OpenJDK can help improve these issues by creating a checkpoint with an application's peak performance and restoring an instance of the JVM to that point. Single host certificates are really very cheap; futzing around with self-signed stuff is penny-wise pound-foolish (i. It sounds like you haven't added the right directory to your path. Note: The symbols ? and : appear together in a conditional expression. In this Stack Overflow post, you can find different ways to do it, such as using StringBuilder, char array, recursion, or loops. " If the caller passes null, but null is not a valid argument for the method, then it's correct to throw the exception back at the caller because it's the caller's fault. Oct 22, 2013 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 10, 2021 · An interface in java is a blueprint of a class. Java has had concurrency via threads from the beginning, but they were always tied to an OS thread. When people say "Java does not have pointers", they typically confuse the concept of a pointer with the specific implementation and abilities of pointers found in C and C-derived languages. For example May 4, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 5, 2010 · I'm working on a project where all conversions from int to String are done like this: int i = 5; String strI = "" + i; I'm not familiar with Java. You're attempting to shave off each digit from the integer backwards, convert each digit to a character manually, append each digit one at a time to the string builder, before reversing the whole thing to get the original ordering back. Let’s look at several of these possibilities. To learn more, see the Oracle Tutorial. with security updates). println(ConsoleColors. Mar 12, 2015 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jan 26, 2014 · Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. The easiest way is to use the Scanner class in Java and the FileReader object. 3 application using Vaadin 24 and EclipseStore 1. RED + "RED COLORED" + ConsoleColors. Overview. equals() checks for null before calling . Simple example: Scanner in = new Scanner(new FileReader("filename. 0_11 1. jar" will open the normal way. 0_111\bin". format method. Date. Jan 10, 2010 · I'm not going to downvote you (not worth the effort). Below is the "un-folded" code. You can also use the traditional bit-shifting trick to compute some powers of two. time objects directly with your database. May 21, 2010 · Java NIO. linkedin. Date, Calendar, & SimpleDateFormat. Static method in Javacalled without any object Static Block In Java. These classes supplant the troublesome old legacy date-time classes such as java. txt"); BufferedReader br = new BufferedReader(new InputStreamReader(fstream)); String strLine; //Read File Line By Line while ((strLine = br. Here let us see the differences Jul 30, 2020 · Saab mentioned four big projects coming to Java that had him excited, all designated by codenames: Loom, Valhalla, Leyden, and ZGC. Sep 17, 2008 · Here's my slightly improved version of Joachim Sauer's concatAll. I need help w Dec 27, 2009 · In Java, an Array stores its length separately from the structure that actually holds the data. , for those not familiar with that English idiom, a totally stupid set of priorities that costs lots to save Mar 13, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company In the "Open with" dialog box, go to your Java folder location on your PC and open corresponding jdk folder and then open the bin folder and select "javaw. 0_24' if you are installing java version 6. Because for beginners telling that "behind the scenes java have pointers" can lead to very confusing state. Stack Overflow is a community of programmers who can help you with your coding problems. Learn how to compare, swap, sort and print arrays in Java with ease. Please be aware that (1) You have answerred on a Java question, where the program language should be in Java. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company By setting the (Windows) environment variable JAVA_TOOL_OPTIONS to -Dfile. setNext(current) - it won't link previous node with next, it will link current to next (i. Timestamp and java. It has static constants and abstract methods only. Memory in the heap (also known as dynamic memory) is haphazard and disorganized. 'C:\Program Files\Java\jdk1. Iterator--it's syntactic sugar for the same thing. Sep 21, 2014 · I have a file (called "number. will do nothing) Sep 30, 2009 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The other option – the one you don't mention – is to get the server's certificate fixed either by fixing it yourself or by calling up the relevant support people. To learn more, see our tips on writing great Aug 1, 2017 · How to sort an array in Java using different methods and algorithms? Find answers and examples from experienced programmers on Stack Overflow, the largest online community for developers. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company JAVA_OPTS is not used by the JDK, but by a bunch of other apps (see this post). 2. Third - your implementation is broken anyway because of last. To learn more, see our tips on writing great May 16, 2010 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Effective Java 2nd Edition, Item 25: Prefer lists to arrays). 7. And search Stack Overflow for many examples and explanations. Nov 17, 2009 · This should be the answer at top. Java is class-based; JavaScript is prototype-based. The for-each loop, added in Java 5 (also called the "enhanced for loop"), is equivalent to using a java. Map-- respectfully called java. \b Insert a backspace in the text at this point. Integer // You can store a subclass object in an array that is declared // to be of the type of its superclass. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 23, 2011 · Here are a list of colors in a Java class with public static fields. In case we have some String values stored in the Priority Queue (having capacity 5) we can provide inline comparator (based on length of String) : This is one of the few correct answers here. Aug 21, 2013 · A correctly written recursion should not produce a stack overflow. jar (then enter) for example: D:\projects\folder1\innerFolder>java -jar filename. txt") which I want to read to an array in Java. I'm having trouble setting up a simple test to ensure that I can read and write to Jul 19, 2024 · Read the latest posts from Stack Overflow's blog about Java, featuring interviews with experts, trends, and tips. Second, your remove method fails if node data is null. I've got an answer to this, and I've also got many useful answers and comments relevant to how Java hand Apr 2, 2013 · ==tests for reference equality (whether they are the same object). Mar 29, 2010 · If you are getting a stack overflow, you are likely attempting infinite recursion or are severely abusing function invocations. Usual java location example : "C:\Program Files (x86)\Java\jdk1. Dec 19, 2011 · First of all, your head is just a before-first marker so you shouldn't start the remove check from it. util. equals() tests for value equality (whether they contain the same data). Perhaps you might consider making some of your procedures iterative instead of recursive or double-check that you have a correct base case in your recursive procedure. You may exchange java. We can use lambda expression or method reference introduced in Java 8. unmodifiableList vs Collectors Jan 8, 2024 · Java does not throw an exception when an overflow occurs; that is why it can be hard to find errors resulting from an overflow. If you already have the content you want to write to the file (and not generated on the fly), the java. time. Jul 29, 2009 · Number[] numArray = {1,2,3,4}; // java. The way to create a new instance of a JFrame is pretty simple. Nor can we directly access the overflow flag, which is available in most CPUs. 6 days ago · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand May 13, 2009 · Java 9. Jul 30, 2020 · Learn about the changes and innovations that made Java a popular and versatile language for 25 years. To give an example of just how fast is fast, I did some (completely rudimentary and informal) performance tests, and I found EnumMap to be over 3 times faster than java. Starting from Java 8. About java. . Daniel Liang page 126 - 127 Jul 12, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Oct 8, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 17, 2011 · Enums have EXTREMELY FAST and memory-optimized versions of java. Check this answer for more info about the difference in Collections. \f Insert a form feed in the text at this point. e. arraycopy) but will use the faster method if possible. May 5, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Nov 30, 2016 · I asked this question to get to know how to increase the runtime call stack size in the JVM. They form a conditional operator and also called a ternary operator because it uses three operands. A subscription-based API service that provides continuous access to Stack Overflow’s public dataset to train and fine-tune large language models. Learn more Where developers and technologists share private knowledge with coworkers. For example: the naive recursive implementation of the Fibonacci function Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Learn how to check if a string is a palindrome in Java using different methods and examples. You will know that the parameter has been picked up because the following message will be posted to System. That is, (1L << k) is two to the k-th power for k=0. However, there are various ways to handle a possible overflow. . encoding=UTF8 Jan 8, 2024 · Java applications have a notoriously slow startup and a long warmup time. This is because the stack maintains obsolete references to these objects. I'm working on a Java 21, Spring Boot 3. May 7, 2015 · It is important to note that Java's hash function is less than optimal. 5 you can use the String. cited from: Intro to Java Programming 10th edition by Y. java versions) as variable_value. For fork join pools and parallel streams, use SplittableRandom (it implements SplittableGenerator interface, see Java 17 notes below) that is usually faster, has a better statistical independence and uniformity properties in comparison with Random. In particular: Java references can't be set to an arbitrary address. Finally you can see your output. Explore more Java courses and advance your skills on LinkedIn Learning:https://www. 1. The reason is JDBC i. See also If a stack grows and then shrinks, the objects that were popped off the stack will not be garbage collected, even if the program using the stack has no more references to them. When you create an Array, you specify its length, and that becomes a defining attribute of the Array. pow(double, double) (casting the result to int if necessary). jar. Stack Overflow is the largest, most trusted online community for developers to learn, share their programming knowledge, and build their careers. equals() so you don't have to (available as of JDK7, also available in Guava). time classes. Discover the upcoming projects that aim to improve concurrency, memory, startup time and performance of Java applications. "The best way to avoid this type of exception is to always check for null when you did not create the object yourself. In some cases you can configure the thread stack size in Java to be larger to handle some circumstances ( large data sets being managed in local stack storage, long recursive calls) but this will increase the overall memory footprint which can lead to issues in the number of threads available in the VM. The are picked up by at least java and javac; They have this precedence: _JAVA_OPTIONS (overwrites the others) Command line parameters Sep 6, 2010 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Mar 3, 2011 · And search Stack Overflow for many examples and explanations. 6. g. First find out which directory you've installed Java in. Stack Frames and How StackOverflowError Occurs. Date in many instances. Apr 26, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Float numArray[1] = new Integer(1); // java. Use a Different Data Type Nov 20, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 1 + 1 = 1 ---- last call of the stack (hits a base case). Jul 16, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. encoding=UTF8, the (Java) System property will be set automatically every time a JVM is started. If you want less collisions and almost complete elimination of re-hashing at ~50% capacity, I'd use a Buz Hash algorithm Buz Hash. It can work on Java 5 or 6, using Java 6's System. Third Edition. System. You can use double Math. 3 days ago · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. of("A", "B"); Java 10. This method (IMHO) is perfect for Android, as it work on Android <9 (which doesn't have System. Learn about Java's state, features, and future from podcasts, articles, and comments. unmodifiableList will return an instance of truly unmodifiable list introduced in Java 9. All you have to do is: JFrame myFrame = new JFrame("Frame Title"); But now the Window is hidden, to see the Window you must use the setVisible(boolean flag) method. In case we are using Java 9 then: List<String> list = List. Therefore, when reading each element, one by one and in order, a for-each should always be chosen over an iterator, as it is more convenient and concise. txt")); Scanner has several methods for reading in strings, numbers, etc Dec 22, 2014 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. in Java also, there is a special block called “static” block that usually includes a block of code related to static data. time framework is built into Java 8 and later. * I ran this JAR file by double clicking on it (it didn't work). The Joda-Time project, now in maintenance mode, advises migration to the java. jar It raised "F Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 11, 2017 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am working on a Java program that reads a text file line-by-line, each with a number, takes each number throws it into an array, then tries and use insertion sort to sort the array. Whenever the java application interacts with the database, we should use these instead of java. Objects. Sep 22, 2010 · Learn how to use super() in Java to access superclass methods and constructors, and see examples and explanations from Stack Overflow users. readLine()) != null) { // Print the content on the console - do what you Oct 29, 2008 · Java is a statically typed language; JavaScript is dynamic. Nov 4, 2009 · Now click on 'new' button under system variables and enter 'JAVA_HOME' as variable name and path to jdk home directory (ex. com/l Jan 8, 2024 · 1. jar *. The java. 63. Use a JDBC driver compliant with JDBC 4. Learn how to find and fix StackOverflowErrors in your code. 4. \r Insert a carriage return in the text at this point. // Here 'Number' is the superclass for both Float and Integer. The prob 4 days ago · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jan 2, 2010 · Exponentiation in Java. Details: Java 6, Apache Commons Collection, IntelliJ 12. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. HashMap . Is this usual practice or is something wrong, Dec 18, 2012 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Apr 25, 2023 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Dec 19, 2019 · Here: public class Tree<T> { private Node<T> root; public Tree(T rootData) { root = new Node<T>(); root. Usage. Java is open source, but a supplier will take care of building the java source code into a binary, wrapping this into an installer, and maintaining this version on your machine (e. The interface in java is a mechanism to achieve fully abstraction. To learn more, see our tips on writing great To get a Java JDK so you can develop (or run) java code on your machine, you need a java installer package supplier. Listen to an interview with Georges Saab, a veteran Java developer, and explore the history and features of Java. EnumMap. They keep bubbling (resolving backwards) up until the correct sum is returned to the first call in the stack and that's how you get your answer. In this article, we’ll see how this error can occur by looking at a variety of code examples as well as how we can deal with it. There can be only abstract methods in the java interface not method body. Learn more Explore Teams Nov 4, 2016 · Creating a new JFrame. Most of the other ones don't actually reverse the stream, they try to avoid doing it somehow (which only works under peculiar sets of circumstances under which you normally wouldn't need to reverse in the first place). The Loom project aims to loosen the coupling between Java threads and native threads. data = rootData; root. getNext(). children = new ArrayList<Node<T There is absolutely no reason to do any of this. Nor can (standard now, java -jar filename. 0 for embedded storage. Joshua Bloch. (3) Your use of encapsulation( getter (or accessor) and setters (or mutators)) is incorrect. However, there are situations where a method can produce a stack overflow even if it was correctly implemented. arraycopy if it's available at runtime. Directory name may change with diff. Making statements based on opinion; back them up with references or personal experience. It is the only ternary operator in Java. Apr 9, 2011 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Dec 4, 2016 · I created a JAR file like this: jar cf Predit. JAVA_TOOL_OPTIONS and _JAVA_OPTIONS are ways to specify JVM arguments as an environment variable instead of command line parameters. RESET + " NORMAL"); Note Don't forget to use the RESET after printing as the effect will remain if it's not cleared Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Effective Java. StackOverflowError can be annoying for Java developers, as it’s one of the most common runtime errors we can encounter. sql. \n Insert a newline in the text at this point. permutation for ba, would be ba and ab, but what about longer string such as abcdefgh? Is there any Java implementation example? Sep 17, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company These are escape characters which are used to manipulate string. To learn more, see our tips on writing great Apr 13, 2010 · Java does have pointers, which are known under the name "reference". 5f); // java. Just as you have function blocks in programming languages like C++, C#, etc. nio. An obsolete reference is simply a reference that will never be dereferenced again. Number numArray[0] = new Float(1. For instance: A fast-growing (say, exponential) recursion. Files addition in Java 7 as part of Java NIO provides the simplest and most efficient way to achieve your goals. Aug 21, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Sep 10, 2017 · How to reverse a string in Java? This is a common question that many programmers face. (2) If you want to post, ensure that the layout is done correctly. Jul 29, 2020 · Learn how Java evolved from a language for interactive TV to a global platform for web and cloud applications. Java constructors are special functions that can only be called at object creation; JavaScript "constructors" are just standard functions. 2 or later. file. For example, on my box it's in C:\Program Files\java\jdk1. Learn from the answers and comments of other Java experts and improve your coding skills. Jul 19, 2024 · Founded in 2008, Stack Overflow’s public platform is used by nearly everyone who codes to learn, share their knowledge, collaborate, and build their careers. \t Insert a tab in the text at this point. 8. Set and java. 2 + 1 = 3 ---- Next level of the stack (resolving backwards). ucxa kqryl hfwvov pre kpop mdlf ahlgykyk hzq knthdm ecyhafq