Page 336 - CITS - Computer Software Application -TT

COMPUTER SOFTWARE APPLICATION - CITS

• Default statement is executed when any of the case doesn’t match the value of expression. It is optional.
• Break statement terminates the switch block when the condition is satisfied.
It is optional, if not used, next case is executed.
• While using switch statements, we must notice that the case expression will be of the same type as the
variable. However, it will also be a constant value.
The syntax to use the switch statement is given below.
switch (expression){
case value1:
statement1;

break;
.
.
.

case valueN:
statementN;
break;
default:
default statement;

}
Consider the following example to understand the flow of the switch statement.
Student.java
public class Student implements Cloneable {

public static void main(String[] args) {
int num = 2;
switch (num){
case 0:
System.out.println(“number is 0”);
break;

case 1:
System.out.println(“number is 1”);
break;
default:

System.out.println(num);
}
}
}
Output:

2
While using switch statements, we must notice that the case expression will be of the same type as the variable.
However, it will also be a constant value. The switch permits only int, string, and Enum type variables to be used.

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CITS : IT&ITES - Computer Software Application - Lesson 85 - 93