Java Case Keyword

Case Keyword In Java

The value of the expression is compared with each of the literal values in the case statements. If a match is found, the code sequence following that case statement is executed.

The case is a predefined keyword hence it will be written in small cases only.

1. We can not repeat the case value.

2. We can not use a floating constant with the case.

3. Case value has no sequence.

Here is an example -

Example -

Here’s an example that takes a day number from 1 to 7, and determines the day name.

import java.util.*;
public class VowelsAndConsonants { public static void main(String[] args) {
int dayno;
System.out.println("Input Day No : ");
Scanner ob = new Scanner(System.in);
dayno = ob.nextInt();
switch(dayno)
{
case 1:
System.out.println("Monday);
break;
case 2:
System.out.println("Tuesday ");
break;
case 3:
System.out.println("Wednesday ");
break;
case 4:
System.out.println("Thursday");
break;
case 5:
System.out.println("Friday ");
break;
case 6:
System.out.println("Saturday ");
break;
case 7:
System.out.println("Sunday ");
break;
default:
System.out.println("Invalid day number. \nPlease try again ....");
break;
}
}

Output-

Input Day No : 5

Friday