Thread: Logical Operators

        boolean programStopped = false;
        while (!programStopped) {
            //do something - ends when programStopped = true
        }

        Scanner input = new Scanner(System.in);
        int x = input.nextInt();
        if(x != 2){
            System.out.println("Wrong Answer..Number I was thinking of was 2");
        }

        if(myArrayList != null){
        //get item from first index!
        }
        else{
            //Please insert something into ArrayList first..
        }

Can be used often to stop exceptions arising in the first place, where the above without any operators would throw an IndexOutOfBoundsException if you tried doing it directly, which would then involve try-catch blocks.

There are tons of examples I'm sure, but those are what I can think of right now

They're also useful for testing multiple conditions.

boolean isRed = true;
boolean isLarge = false;
if(isRed && isLarge)
{
    System.out.println("red and large");
}
if (isRed || isLarge)
{
    System.out.println("is red or is large or both.");
}