Question List Related To The Topic: "Java"



Last Updated: 16 September, 2021

How to onclick method android (Java Programming Language)


Answer: 1 public void clickFunction ( View view ){} Source: Code Grepper.... Know More


How to remoce last character froma java string (Java Programming Language)


Answer: 1 str = str . substring ( 0 , str . length () - 1 ); Source: Code Grepper.... Know More


How to python create hash from string (Java Programming Language)


Answer: 1 import hashlib 2 hash_object = hashlib . sha256 ( b 'Hello World' ) 3 hex_dig = hash_object . hexdigest () 4 print ( hex_dig ) 5 ​ Source: Code Grepper.... Know More


How to java comment many line (Java Programming Language)


Answer: 1 //This is single line comment 2 ​ 3 /* 4 This is 5 multi line comment 6 */ Source: Code Grepper.... Know More


How to Operators in java (Java Programming Language)


Answer: 1 // example on java unary NOT (!) operator 2 public class JavaUnaryOperator 3 { 4 public static void main ( String [] args ) 5 { 6 boolean bool = true ; 7 int a = 14 , b = 5 ; 8 System . out . println ( Before using java unary ! operator: + bool ); 9 System . out . println ( a = + a ); 10 System . .. Know More


How to JAVA_HOME is not defined correctly. (Java Programming Language)


Answer: 1 export JAVA_HOME = $ ( /usr/ libexec / java_home ) 2 ​ Source: Code Grepper.... Know More


How to Jlabel icon (Java Programming Language)


Answer: 1 ImageIcon image = new ImageIcon ( c:\\path\\image.png ); 2 imagelabel = new JLabel ( character , image , JLabel . CENTER ); 3 frame . add ( imagelabel ); Source: Code Grepper.... Know More


How to send action bar spigot (Java Programming Language)


Answer: 1 player . spigot (). sendMessage ( ChatMessageType . ACTION_BAR , new TextComponent ( This message will be in the Action Bar )); 2 ​ Source: Code Grepper.... Know More


How to while loop in java (Java Programming Language)


Answer: 1 // Java infinite while loop 2 import java . util . * ; 3 public class WhileLoopExample 4 { 5 public static void main ( String [] args ) 6 { 7 boolean value = true ; 8 while ( value ) 9 { 10 System . out . println ( Infinite loop ); 11 } 12 } 13 } Source: Code Grepper.... Know More


How to java type casting (Java Programming Language)


Answer: 1 // You can typecast to convert a variable of one data type to another. 2 // Wide Casting converts small data types to larger ones. 3 // Narrow Casting converts large data types to smaller ones. 4 // Java can automatically Wide Cast. 5 // Java will throw an error when trying to automatically Narrow.. Know More


How to Cannot load driver class: com.mysql.cj.jdbc.Driver (Java Programming Language)


Answer: 1 dependency > 2 groupId > mysql /groupId> 3 artifactId > mysql - connector - java /artifactId> 4 version > 8.0.18 /version> 5 /dependency> Source: Code Grepper.... Know More


How to android clear specific sharedpreference value (Java Programming Language)


Answer: 1 SharedPreferences preferences = getSharedPreferences ( Mypref , 0 ); 2 preferences . edit (). remove ( text ). commit (); Source: Code Grepper.... Know More


How to how to get ascii value of string letter in java (Java Programming Language)


Answer: 1 char character = name . charAt ( 0 ); // This gives the character 'a' 2 int ascii = ( int ) character ; // ascii is now 97. Source: Code Grepper.... Know More


How to string to int java (Java Programming Language)


Answer: 1 int result = Integer . parseInt ( number ); Source: Code Grepper.... Know More


How to java prompt name (Java Programming Language)


Answer: 1 public class Main { 2 public static void main ( String [] args ) { 3 var scanner = new java . util . Scanner ( System . in ); 4 System . out . print ( What is your name? ); 5 var name = scanner . nextLine (); 6 System . out . println ( Hello + name + ! ): 7 } 8 } Source: Code Grepper.... Know More


How to Variables in java (Java Programming Language)


Answer: 1 // local variable in java example 2 public class LocalVariableExample 3 { 4 public void employeeDetails () 5 { 6 // local variable empAge and name 7 int empAge = 22 ; 8 String name = Sachin ; 9 } 10 public static void main ( String [] args ) 11 { 12 LocalVariableExample obj = new LocalVariableExam.. Know More


How to vue input pre initial value (Java Programming Language)


Answer: 1 You can just use placeholder : 2 input 3 class = input 4 name = text 5 type = email 6 v - model . trim = formData.email 7 placeholder = Email Address 8 /> Source: Code Grepper.... Know More


How to Write a program that prints the next 20 leap years. (Java Programming Language)


Answer: 1 public class Main { 2 public static void main ( String [] args ) { 3 var scanner = new java . util . Scanner ( System . in ); 4 System . out . print ( What is the current year? ); 5 int year = scanner . nextInt () + 1 ; 6 int count = 0 ; 7 while ( count 20 ) { 8 if ( year % 4 == 0 ) { 9 if ( year .. Know More


How to use regex in if statement java (Java Programming Language)


Answer: 1 Pattern p = Pattern . compile ( a*b ); 2 Matcher m = p . matcher ( aaaaab ); 3 boolean b = m . matches (); Source: Code Grepper.... Know More


How to how to print array elements in java (Java Programming Language)


Answer: 1 import java . util . Arrays ; 2 ​ 3 public class Array { 4 ​ 5 public static void main ( String [] args ) { 6 int [] array = { 1 , 2 , 3 , 4 , 5 }; 7 ​ 8 System . out . println ( Arrays . toString ( array )); 9 } 10 } Source: Code Grepper.... Know More


How to replace character in string java (Java Programming Language)


Answer: 1 String str = .............................. ; 2 ​ 3 int index = 5 ; 4 5 char ch = '|' ; 6 7 StringBuilder string = new StringBuilder ( str ); 8 string . setCharAt ( index , ch ); 9 ​ 10 System . out . println ( string ); Source: Code Grepper.... Know More


How to Variables in java (Java Programming Language)


Answer: 1 // local variable in java example 2 public class LocalVariableExample 3 { 4 public void employeeDetails () 5 { 6 // local variable empAge and name 7 int empAge = 22 ; 8 String name = Sachin ; 9 } 10 public static void main ( String [] args ) 11 { 12 LocalVariableExample obj = new LocalVariableExam.. Know More


How to import everything in java (Java Programming Language)


Answer: 1 import java . util . * ; Source: Code Grepper.... Know More


How to SwipeRefreshLayout (Java Programming Language)


Answer: 1 public class ActivityMain extends FragmentActivity implements OnRefreshListener { 2 ​ 3 private SwipeRefreshLayout mSwipeRefreshLayout ; 4 ​ 5 @ Override 6 protected void onCreate ( Bundle savedInstanceState ) { 7 setContentView ( R . layout . activity_main ); 8 mSwipeRefreshLayout = ( SwipeRefres.. Know More


How to java length of matrix (Java Programming Language)


Answer: 1 public static void main ( String [] args ) { 2 ​ 3 int [][] foo = new int [][] { 4 new int [] { 1 , 2 , 3 }, 5 new int [] { 1 , 2 , 3 , 4 }, 6 }; 7 ​ 8 System . out . println ( foo . length ); //2 9 System . out . println ( foo [ 0 ]. length ); //3 10 System . out . println ( foo [ 1 ]. length ); .. Know More


How to Java program to check if it is a sparse matrix (Java Programming Language)


Answer: 1 import java . util ; 2 public class SparseMatrix 3 { 4 public static void main ( String [] args ) 5 { 6 Scanner sc = new Scanner ( System . in ); 7 System . out . println ( Please enter dimensions of sparse matrix: ); 8 int x = sc . nextInt (); 9 int y = sc . nextInt (); 10 int [][] arrNumber = ne.. Know More


How to ARE THERE POINTER IN JAVA (Java Programming Language)


Answer: 1 Java does not have pointers . Source: Code Grepper.... Know More


How to convert void * to int (Java Programming Language)


Answer: 1 int a = 5 ; 2 void * p = ( void * ) a ; 3 int b = ( int ) p ; Source: Code Grepper.... Know More


How to java convert String to int (Java Programming Language)


Answer: 1 int i = Integer . parseInt ( myString ); Source: Code Grepper.... Know More


How to Cask 'java' is unreadable: undefined method `release' for OS::Mac:Modul (Java Programming Language)


Answer: 1 Java cask is old / obsolete 2 Trash the directory at `$(brew --prefix)/Caskroom/java` and re install . Source: Code Grepper.... Know More


How to java coding for beginners (Java Programming Language)


Answer: 1 = Output : 10 2 += Output : 20 3 -= Output : 10 4 *= Output : 200 5 /= Output : 10 6 %= Output : 0 Source: Code Grepper.... Know More


How to how do you implement abstraction in your framework (Java Programming Language)


Answer: 1 I have created my PageBase class as super 2 class of the all page classes . 3 I have collected all common elements 4 and functions into PageBase class and 5 all other page classes extent PageBase class . 6 By doing so , I don 't have to locate very 7 common WebElements and it provides 8 reusabilit.. Know More


How to how to check if rs next is null (Java Programming Language)


Answer: 1 if ( rs . next () == false ) { 2 System . out . println ( ResultSet in empty in Java ); 3 } else { 4 ​ 5 do { 6 String data = rs . getString ( emp_name ); 7 System . out . println ( data ); 8 } while ( rs . next ()); 9 } Source: Code Grepper.... Know More


How to java call another constructor (Java Programming Language)


Answer: 1 public class Foo { 2 private int x ; 3 ​ 4 public Foo () { 5 this ( 1 ); 6 } 7 ​ 8 public Foo ( int x ) { 9 this . x = x ; 10 } 11 } Source: Code Grepper.... Know More


How to read int from keyboard java (Java Programming Language)


Answer: 1 import java . util . Scanner ; 2 ​ 3 public class Main { 4 public static void main ( String args []){ 5 ​ 6 Scanner scan = new Scanner ( System . in ); 7 ​ 8 //For string 9 ​ 10 String text = scan . nextLine (); 11 ​ 12 System . out . println ( text ); 13 ​ 14 //for int 15 ​ 16 int num = scan . ne.. Know More


How to how to get the dimensions of a 2d array in java (Java Programming Language)


Answer: 1 public class Main { 2 public static void main ( String [] args ) { 3 int [][] test = new int [ 10 ][ 4 ]; 4 int rows = test . length ; 5 int coloumns = test [ 0 ]. length ; 6 System . out . println ( rows ); 7 System . out . println ( coloumns ); 8 } 9 } Source: Code Grepper.... Know More


How to java how to initialize an array (Java Programming Language)


Answer: 1 int [] arr = new int [ 10 ]; //Can hold 10 elements Source: Code Grepper.... Know More


How to JRE (Java Programming Language)


Answer: 1 • Java Runtime Environment : JRE is what we need to run a Java program 2 and containsset of libraries and other files that JVM uses at run time . 3 JRE = JVM + Library Classes Source: Code Grepper.... Know More


How to for loop java (Java Programming Language)


Answer: 1 for ( /*index declaration*/ int i = 0 ; /*runs as long as this is true*/ 2 i 5 ; /*change number at end of loop*/ i ++ ){ 3 doStuff (); 4 ​ 5 } Source: Code Grepper.... Know More


How to spigot actionbar (Java Programming Language)


Answer: 1 player . spigot (). sendMessage ( 2 ChatMessageType . ACTION_BAR , 3 new TextComponent ( This message will be in the Action Bar )); Source: Code Grepper.... Know More


How to java get current year (Java Programming Language)


Answer: 1 import java . util . Calendar ; 2 ​ 3 int year = Calendar . getInstance (). get ( Calendar . YEAR ); Source: Code Grepper.... Know More


How to reverse a string in java (Java Programming Language)


Answer: 1 Solution 1 2 ​ 3 public static String StrReverse ( String str ) { 4 ​ 5 String reverse = " ; 6 ​ 7 for ( int i = str . length () - 1 ; i >= 0 ; i -- ) 8 ​ 9 reverse += str . toCharArray ()[ i ]; 10 ​ 11 12 ​ 13 return reverse ; 14 ​ 15 } 16 ​ 17 18 ​ 19 Solution 2 ( using string buffer ) 20 ​ 21 p.. Know More


How to abstraction in java (Java Programming Language)


Answer: 1 Abstraction is nothing but the quality of dealing with ideas rather than 2 events . It basically deals with hiding the internal details and showing 3 the essential things to the user . Source: Code Grepper.... Know More


How to enter a word and print letters java (Java Programming Language)


Answer: 1 He said , That's not a good idea. Source: Code Grepper.... Know More


How to Reverse a string in java (Java Programming Language)


Answer: 1 // reverse a string using reverse() method of StringBuilder class 2 class ReverseUsingReverseMethod 3 { 4 public static void main ( String [] args ) 5 { 6 String str = Hello world Java ; 7 StringBuilder sb = new StringBuilder (); 8 // append string to StringBuilder 9 sb . append ( str ); 10 sb = s.. Know More


How to android round double to 2 decimal (Java Programming Language)


Answer: 1 String . format ( %.2f , d ) Source: Code Grepper.... Know More


How to android java get current time (Java Programming Language)


Answer: 1 import java . time . * ; 2 LocalDateTime datetime = LocalDateTime . now (); Source: Code Grepper.... Know More


How to java int to string (Java Programming Language)


Answer: 1 String s = String . valueOf ( n ); 2 String s = Integer . toString ( int ); Source: Code Grepper.... Know More


How to online java compiler (Java Programming Language)


Answer: 1 Repl . it Compiler : click source buttton to go to the website 2 Pros : You can add files , do javafx and jswing . Source: Code Grepper.... Know More