Syed Javed has Published 53 Answers

Java default constructor

Syed Javed
Syed Javed
Published on 22-Apr-2018 20:17:05
Yes! it is supported. A constructor with no arguments is called default constructor. It is used to initialize an object with default values.  exampleLive Demopublic class Tester {      private String message;      public Tester(){       message = "Hello World!";    }      public String getMessage(){ ... Read More

Java copy constructor

Syed Javed
Syed Javed
Published on 22-Apr-2018 20:02:58
Java has no explicit copy constructor but we can mimic the behaviour. See the following example −ExampleLive Demopublic class Tester {      private String message;      public Tester(String message){       this.message = message;    }    public Tester(Tester tester){       this.message = tester.message;   ... Read More

This keyword in Java

Syed Javed
Syed Javed
Published on 22-Apr-2018 19:47:47
Following are the usage of this keyword. this can be used to get the current object.this can be used to invoke current object's method.this() can be used to invoke current class constructorthis can be passed as a parameter to a method call.this can be passed as a parameter to a constructor.this ... Read More

Factorial program in Java using recursion.

Syed Javed
Syed Javed
Published on 22-Apr-2018 19:15:58
Following is the required program.ExampleLive Demopublic class Tester {    public static void main(String args[]) {       int i, fact = 1;       int number = 5;       for (i = 1; i <= number; i++) {          fact = fact ... Read More

Palindrome program in Java.

Syed Javed
Syed Javed
Published on 22-Apr-2018 19:08:15
Following is the required program.ExampleLive Demopublic class Tester {    public static void main(String args[]) {       int r, sum = 0, temp;       int m = 454;       int n = m;       temp = n;       while (n ... Read More

How to randomize (shuffle) a JavaScript array?

Syed Javed
Syed Javed
Published on 22-Apr-2018 18:56:46
To randomize a JavaScript array to display random elements, you can try to run the following code:ExampleLive Demo<html>        <body>                     <script>            function randomFunc(myArr) {                   ... Read More

How to merge two arrays in JavaScript?

Syed Javed
Syed Javed
Published on 22-Apr-2018 18:48:39
To merge two arrays in JavaScript, use the Array.concat() method. JavaScript array concat() method returns a new array comprised of this array joined with two or more arrays.ExampleYou can try to run the following code to merge two arrays:Live Demo<html>        <head>             ... Read More

Binary search in Java.

Syed Javed
Syed Javed
Published on 22-Apr-2018 18:45:23
Following is the required program.ExampleLive Demopublic class Tester {    public static int binarySearch(int arr[], int first, int last, int element){       int mid = (first + last)/2;       while( first <= last ){          if ( arr[mid] < element ){     ... Read More

Fibonacci series program in Java without using recursion.

Syed Javed
Syed Javed
Published on 22-Apr-2018 18:07:48
Following is the required program.ExampleLive Demopublic class Tester {    public static void main(String args[]) {        int n1 = 0, n2 = 1, n3, i, max = 5;        System.out.print(n1 + " " + n2);        for (i = 2; i < max; ... Read More

What are the methods of an array object in JavaScript?

Syed Javed
Syed Javed
Published on 22-Apr-2018 18:02:26
The Array object lets you store multiple values in a single variable. It stores a fixed-size sequential collection of elements of the same type.Here is a list of some of the methods of the Array object:S.NoMethod & Description       1concat()Returns a new array comprised of this array joined with ... Read More
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