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"Java" Topic Questions


How to java xml reader (Java Programming Language)

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1 package com . mkyong . seo ; 2 import javax . xml . parsers . DocumentBuilderFactory ; 3 import javax . xml . parsers . DocumentBuilder ; 4 import org . w3c . dom . Document ; 5 import org . w3c . dom . NodeList ; 6 import org . w3c . dom . Node ; 7 import org . w3c . dom . Element ; 8 import .....

How to java variables in annotations (Java Programming Language)

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1 import org . junit . Test ; 2 import static org . junit . Assert . * ; 3 public class MyTestClass 4 { 5 private static final int TEST_TIMEOUT = 60000 ; // one minute per test 6 @ Test ( timeout = TEST_TIMEOUT ) 7 public void testJDK () 8 { 9 assertTrue ( Something is very wrong , Boolean . TRUE .....

How to foreach skip to next java (Java Programming Language)

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1 for ( String str : strArr ) { 2 continue ; //Skips current iteration and moves onto the following 3 } Source: Tutorials .....

How to what is a do while loop in java (Java Programming Language)

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1 do { 2 //something you want to execute at least once 3 } while ( someBooleanCondition ); Source: .....

How to swagger apiimplicitparam all endpoints (Java Programming Language)

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1 @ Bean 2 public Docket api () { 3 return new Docket ( DocumentationType . SWAGGER_2 ) 4 . select () 5 . apis ( RequestHandlerSelectors . basePackage ( com.xxx.yyy.resource )) 6 . paths ( PathSelectors . any ()) 7 . build () 8 . globalOperationParameters ( commonParameters ()) 9 . apiInfo ( .....

What is idx in java?

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Information about the IDX file format: the IDX file format is a simple format for vectors and multidimensional matrices of various numerical types . The basic format is: magic number size in dimension 0 size in dimension 1 size in dimension 2 ..... size in dimension N data. The magic number is an .....

How to rainbow six (Java Programming Language)

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1 ahh rainbow six seige aka delete your life Source: .....

What is aes cbc pkcs5padding in java?

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Java AES Encryption Example | CBC Mode + 128 Bits + PKCS5Padding. September 4, 2018 by javainterviewpoint Leave a Comment. AES (Advanced Encryption Standard) is a strong encryption and decryption algorithm and more secure than its predecessors DES (Data Encryption Standard) and 3DES .....

How to how to read a date string in java (Java Programming Language)

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1 LocalDate date = LocalDate . parse ( 2018-05-05 ); Source: Tutorials .....

How to search engine using java example (Java Programming Language)

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1 import java . util . * ; 2 import java . io . * ; 3 public class SearchEngine { 4 public static void main ( String [] args ){ 5 Hashtable < String , ArrayList < String > > ht = new Hashtable < String , ArrayList < String > > (); 6 Scanner kb = new Scanner ( System . in ); .....

How to java split array into two (Java Programming Language)

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1 String [] array = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 }; 2 String [] a = Arrays . copyOfRange ( array , 0 , 4 ); //<- (targetArray, start, to) 3 String [] b = Arrays . copyOfRange ( array , 4 , array . length ); 4 Output : 5 a : 0 , 1 , 2 , 3 6 b : 4 , 5 , 6 , 7 , 8 , 9 Source: Code .....

What is awt textfield in java?

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The object of a TextField class is a text component that allows a user to enter a single line text and edit it . It inherits TextComponent class, which further inherits Component class. When we enter a key in the text field (like key pressed, key released or key typed), the event is sent to .....

How to java packages example (Java Programming Language)

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1 // import <package> -> Imports the whole package 2 // import <package>.<class> -> Imports a certain class 3 import java . util . Scanner ; Source: Tutorials .....

How to modify element in list java (Java Programming Language)

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1 list . set ( 2 , New ); Source: .....

How to latex x element of symbol (Java Programming Language)

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1 \ documentclass { article } 2 \ usepackage { graphicx } 3 \ usepackage { amsmath } 4 \ newcommand \ Inn { % 5 \ mathrel {\ ooalign { $ \ subset$ \ cr \ hfil \ scalebox { 0.8 }[ 1 ]{ $ = $ }\ hfil \ cr }} % 6 } 7 \ begin { document } 8 \[ 9 A \ in B % one stroke in middle 10 \] 11 \[ 12 A \ Inn B .....

What is tuple in java?

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Tuple. The word “tuple” means “a data structure consisting of multiple parts”. Hence Tuples can be defined as a data structure that can hold multiple values and these values may/may not be related to each other. Example: [Geeks, 123, &#*@] In this example, the values in the tuple are not at all .....

How to how to append values in integer array in java (Java Programming Language)

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1 import java . util . ArrayList ; 2 import java . util . Arrays ; 3 import java . util . List ; 4   5 class Main 6 { 7      private static Integer [] append ( Integer [] arr , int element ) { 8          List < Integer > list = .....

How to java read file text (Java Programming Language)

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1 try ( BufferedReader br = new BufferedReader ( new FileReader ( file.txt ))) { 2 StringBuilder sb = new StringBuilder (); 3 String line = br . readLine (); 4 while ( line != null ) { 5 sb . append ( line ); 6 sb . append ( System . lineSeparator ()); 7 line = br . readLine (); 8 } 9 String .....

How to ordering test in junit (Java Programming Language)

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1 By adding @ TestMethodOrder annotation 2 on top of class and 3 than @ Order tag on each test 4 with giving them number 5 // these are all available option for ordering your tests 6 //@TestMethodOrder(OrderAnnotation.class) 7 //@TestMethodOrder(Random.class) 8 //@TestMethodOrder(MethodName.class) .....

How to ArrayList isEmpty() method in java (Java Programming Language)

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1 import java . util . ArrayList ; 2 public class ArrayListIsEmptyMethodExample 3 { 4 public static void main ( String [] args ) 5 { 6 ArrayList < Integer > al = new ArrayList < Integer > (); 7 // before checking ArrayList using isEmpty() method 8 System . out . println ( Is ArrayList .....

How to two array structures in java (Java Programming Language)

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1 String [] MONTHS = { 2 " , Jan , Feb , Mar , Apr , May , Jun , 3 Jul , Aug , Sep , Oct , Nov , Dec 4 }; 5 ... 6 System . out . println ( MONTHS [ m ]); Source: Code .....

What is bcrypt in java?

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BCrypt is a one way salted hash function based on the Blowfish cipher. It provides several enhancements over plain text passwords (unfortunately this still happens quite often) and traditional hashing algorithms .....

How to java how to output to a executable (Java Programming Language)

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1 Process process = new ProcessBuilder ( D:\\path\\executable.exe ). start (); 2 InputStream processInputStream = process . geInputStream (); 3 OutputSteam processOutputStream = process . getOutputStream (); 4 BufferedWriter writer = new BufferedWriter ( new OutputStreamWriter ( processOutputStream .....

How to pi in java (Java Programming Language)

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1 use Math . pi to get the double value of pi Source: Geeks For .....

How to set (Java Programming Language)

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1 @ echo off 2 set a [ 0 ] = 1 3 set a [ 1 ] = 2 4 set a [ 2 ] = 3 5 Rem Setting the new value for the second element of the array 6 Set a [ 1 ] = 5 7 echo The new value of the second element of the array is % a [ 1 ] % Source: .....

How to java calculator code (Java Programming Language)

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1 Save   this   file   as   MyCalculator . java   2 to   compile   it   use   3      javac   MyCalculator . java   4 to   use   the   calcuator   do   this   5      java .....

How to java string length validation regex (Java Programming Language)

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1 //Password validation example 2 public static Boolean validPassword ( String password ) throws IllegalArgumentException { 3 if ( ! password . matches ( \\w{6,} )) /*Or '(password.matches(\\w{6,}) == false)'*/ { 4 throw new IllegalArgumentException ( Password must be at least 6 characters long. ); .....

How to get time until start of next hour in java (Java Programming Language)

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1 LocalDateTime start = LocalDateTime . now (); 2 // Hour + 1, set Minute and Second to 00 3 LocalDateTime end = start . plusHours ( 1 ). truncatedTo ( ChronoUnit . HOURS ); 4 // Get Duration 5 Duration duration = Duration . between ( start , end ); 6 long millis = duration . toMillis (); Source: .....

How to android hide textview (Java Programming Language)

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1 android : visibility = invisible Source: .....

How to firebase auth dependency (Java Programming Language)

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1 //Firebase Auth 2 implementation 'com.google.firebase:firebase-auth:20.0.2' 3 //Firebase Auth Ui 4 implementation 'com.firebaseui:firebase-ui-auth:5.0.0' Source: Tutorials .....

How to labeled for loop in java (Java Programming Language)

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1 //WithLabelledLoop.java 2 class WithLabelledLoop 3 { 4 public static void main ( String args []) 5 { 6 int i , j ; 7 loop1 : for ( i = 1 ; i <= 10 ; i ++ ) 8 { 9 System . out . println (); 10 loop2 : for ( j = 1 ; j <= 10 ; j ++ ) 11 { 12 System . out . print ( j + ); 13 if ( j == 5 ) 14 .....

How to log4j with spring boot restful services (Java Programming Language)

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1 <!-- Exclude Spring Boot's Default Logging --> 2 < dependency > 3 < groupId > org . springframework . boot < /groupId> 4 < artifactId > spring - boot - starter < /artifactId> 5 < exclusions > 6 < exclusion > 7 < groupId > org . springframework .....

How to how to find two strings are anagrams in java (Java Programming Language)

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1 import java . util . Arrays ; 2 3 public class AnagramString { 4 static void isAnagram ( String str1 , String str2 ) { 5 String s1 = str1 . replaceAll ( \\s , " ); 6 String s2 = str2 . replaceAll ( \\s , " ); 7 boolean status = true ; 8 if ( s1 . length () != s2 . length ()) { 9 status = false ; .....

How to Student list using Hashmap java (Java Programming Language)

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1 import java . util . * ; 2 class Check 3 { 4 public static void main ( String arg []) 5 { 6    HashMap < Integer , String > hm = new HashMap < Integer , String > (); 7    8        hm . put ( 17 , abhishek ); 9   10 .....

How to bukkit java connect player to another server in bungeecord (Java Programming Language)

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1 //onEnable in Main class 2 getServer (). getMessenger (). registerOutgoingPluginChannel ( this , BungeeCord ); 3 //When you want to connect the player 4 //server is the server name the player should connect to 5 //the variable player is the player you want to connect 6 ByteArrayDataOutput out = .....

What is unsigned int in java?

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Signed Integers are stored in the database as positive and negative values range, from -1 to -128 . Opposite to that, Unsigned Integers hold the large set of positive range values only, no negative values, from 0 to 255 . It means that unsigned integers can never store negative values. .....

How to javafx change button background color (Java Programming Language)

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1 /*can address these properties: */ 2 - fx - border - width 3 - fx - border - color 4 - fx - background - color 5 - fx - font - size 6 - fx - text - fill 7 /* see source for more examples 8 see JavaFX CSS Reference Guide for additional properties: 9 .....

How to java newinstance alternative (Java Programming Language)

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1 YourClass . getDeclaredConstructor (). newInstance () Source: .....

What is war in java?

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In software engineering, a WAR file (Web Application Resource or Web application ARchive) is a file used to distribute a collection of JAR-files, JavaServer Pages, Java Servlets, Java classes, XML files, tag libraries, static web pages (HTML and related files) and other resources that together .....

How to jdbc driver servertimezone configuration property (Java Programming Language)

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1 jdbc : mysql : //localhost/db?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC Source: .....

What is sqrt in java?

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Java sqrt() method with Examples Math. sqrt() returns the square root of a value of type double passed to it as argument . If the argument is NaN or negative, then the result is NaN. If the argument is positive infinity, then the result is positive infinity. .....

What is csv parser in java?

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A Comma-Separated Values (CSV) file is just a normal plain-text file, store data in column by column, and split it by a separator (e.g normally it is a comma “, ”). OpenCSV is a CSV parser library for Java . OpenCSV supports all the basic CSV-type operations you are want to do. 29-Jul-2021 Source: .....

How to max long (Java Programming Language)

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1 long MaxLong = 9223372036854775807 ; // 9,223,372,036,854,775,807 Source: Tutorials .....

What is qname in java?

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QName represents a qualified name as defined in the XML specifications : XML Schema Part2: Datatypes specification, Namespaces in XML, Namespaces in XML Errata. The value of a QName contains a Namespace URI, local part and .....

How to validate isbn number java (Java Programming Language)

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1 public boolean validateIsbn10 ( String isbn ) 2 { 3 if ( isbn == null ) 4 { 5 return false ; 6 } 7 //remove any hyphens 8 isbn = isbn . replaceAll ( - , " ); 9 //must be a 10 digit ISBN 10 if ( isbn . length () != 10 ) 11 { 12 return false ; 13 } 14 try 15 { 16 int tot = 0 ; 17 for ( int i = 0 ; .....

How to convert Integer arraylist to array java (Java Programming Language)

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1 Your_ArrayList_Name . stream (). mapToInt ( k -> k ). toArray (); Source: Tutorials .....

How to calculate time java (Java Programming Language)

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1 System . out . println ( LocalTime . now ()); Source: Tutorials .....

How to ArrayList subList(int fromIndex, int toIndex) method in java (Java Programming Language)

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1 import java . util . ArrayList ; 2 import java . util . List ; 3 public class ArrayListSubListMethodExample 4 { 5 public static void main ( String [] args ) 6 { 7 try 8 { 9 ArrayList < String > al = new ArrayList < String > (); 10 al . add ( orange ); 11 al . add ( apple ); 12 al . .....

How to java jbutton trigger action (Java Programming Language)

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1 myJButton . doClick (); Source: Geeks For .....

What is oracle in java?

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Description The Java Development Kit is a distribution of Java Technology by Oracle Corporation. It implements the Java Language Specification and the Java Virtual Machine Specification and provides the Standard Edition of the Java Application Programming Interface. .....