All about Java conditions & loops

Java conditions – code will be executed based on a condition true or false (if else)

Java loops – Code will be executed no. of times until a condition is false.(while, do while, for loop).

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Code samples –

if else

public class IfElseCond {

	public static void main(String[] args) {
		int a = -10;
		
	if(a > 0) {
		System.out.println("a is a +ve number");
	}else if(a < 0) {
		System.out.println("a is a -ve number");
	}
	else if(a == 0){
		System.out.println("value of a is "+ a);
	}
	
		System.out.println("I execute always");
	}
}

while / do while

public class WhileLoop {
	public static void main(String[] args) {
		int num = 10;
		
		/*while(num == 1) {
			System.out.println(num);
			num--;
		}*/
		
		do {
			System.out.println(num);
			num--;
		}while(num == 1);
		
	}
}

for loop

public class ForLoop {
	public static void main(String[] args) {
		/*int i =0;
		
		for(; i <= 10 ; i++) {
			System.out.println(i);
		}*/
		
		int a[] = {1, 2, 60, -2, 0};
		
		for(int i : a) {
			System.out.println(i);
		}
	}
}