what is the difference between while and do while
A while loop can be used to execute a body of statement when the condition is correct! The syntax is like : while(condition){ //statements body } Example: int j=0,i=3; while(j<i){ System.out.println(j); j++; } Output : 0 1 2 The do...while loop almost same with the while loop except it will execute the statement before the checking the condition !Here you go the syntax : do{ //statement } Example: /*The j is not smaller that i but it will print the value of j.It won't print any thing if you put this condition on the while loop*/ int j=0,i=0; do{ System.out.println(j); }while(j<i); Output : 0