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Boolean data type

Submitted by Rewati on Tue, 09/14/2010 - 14:56

Boolean data type can have only one of two possible values, true or false. Boolean data type can be declared as follows.

boolean bln = <value>;

Where value can either be true or false.

Boolean data type is mainly used in conditional statement which enables program to do different things depending upon the value of the variable.

Boolean data type example

public class FindNumber {
 
 public static void main(String args[]){
  
  boolean found = false;
  //number to search
  int find = Integer.parseInt(args[0]);
  
  //range of numbers
  int range = Integer.parseInt(args[1]);
  
  for(int i=0; i < range; i++){
   if(i == find){
    found = true;
    break;
   }
  }
  
  //if number found print message
  if(found){
   System.out.println("Number found in given range.");
   
  //if number not found
  }else{
   System.out.println("Number not found in given range.");
  }
  
 }
}