By Editorial Staff in Java Programming. Updated on
This page contains the collection of java interview programs with output that we have posted for beginners to learn java programming before the interview in the simple and easy way.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | import java.util.Scanner; class SwapNumberProgram { public static void main(String args[]) { int x, y, temp; System.out.println("Enter number x and y"); Scanner in = new Scanner(System.in); x = in.nextInt(); y = in.nextInt(); System.out.println("Before Swapping\nx = "+x+"\ny = "+y); temp = x; x = y; y = temp; System.out.println("After Swapping\nx = "+x+"\ny = "+y); } } |
Output:
Enter number x and y
10
20
Before Swapping
x value: 10
y value: 20
After Swapping
x value: 20
y value: 10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | import java.util.*; class ArmstrongNumber { public static void main(String args[]) { int n, sum = 0, temp, r; Scanner in = new Scanner(System.in); System.out.println("Enter a number to check if it is an armstrong number:"); n = in.nextInt(); temp = n; while( temp != 0 ) { r = temp%10; sum = sum + r*r*r; temp = temp/10; } if ( n == sum ) System.out.println("Entered number is an armstrong number."); else System.out.println("Entered number is not an armstrong number."); } } |
Output:
Enter a number to check if it is an armstrong number:
153
Entered number is an armstrong number.
Enter a number to check if it is an armstrong number:
5
Entered number is not an armstrong number.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | class FibonacciNumber{ public static void main(String args[]) { int n1=0,n2=1,n3,i,count=10; System.out.print(n1+" "+n2);//printing 0 and 1 for(i=2;i<count;++i)//loop starts from 2 because 0 and 1 are already printed { n3=n1+n2; System.out.print(" "+n3); n1=n2; n2=n3; } }} |
Output:
0 1 1 2 3 5 8 13 21 34
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | import java.util.Scanner; class SwapNumbers { public static void main(String args[]) { int x, y; System.out.println("Enter the number x and y:"); Scanner in = new Scanner(System.in); x = in.nextInt(); y = in.nextInt(); System.out.println("Before Swapping:\nx = "+x+"\ny = "+y); x = x + y; y = x - y; x = x - y; System.out.println("After Swapping:\nx = "+x+"\ny = "+y); } } |
1 2 3 4 5 6 7 8 9 | import java.net.InetAddress; class IPAddress { public static void main(String args[]) throws Exception { System.out.println(InetAddress.getLocalHost()); } } |
Output:
javac IPAddress.java
java IPAddress
124.253.78.30
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | import java.util.Scanner; public class Demo { public static void main(String[] args) { int year; Scanner scan = new Scanner(System.in); System.out.println("Enter any Year:"); year = scan.nextInt(); scan.close(); boolean isLeap = false; if(year % 4 == 0) { if( year % 100 == 0) { if ( year % 400 == 0) isLeap = true; else isLeap = false; } else isLeap = true; } else { isLeap = false; } if(isLeap==true) System.out.println(year + " is a Leap Year."); else System.out.println(year + " is not a Leap Year."); } } |
Output:
Enter any Year:
2000
2000 is a Leap Year.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | public class CompareStringsProgram { public static void main(String[] args) { String style = new String("Bold"); String style2 = new String("Bold"); boolean result = style.equals("Bold"); System.out.println(result); result = style2 == "Bold"; System.out.println(result); result = style == style2; System.out.println(result); result = "Bold" == "Bold"; System.out.println(result); } } |
Output:
true
false
false
true
To increase your Java knowledge, practice all Java programs, here is a collection of 100+ Java problems with solutions.
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