Which of the following is the java comparison operator for "not equal to"

You need to provide "the following", otherwise other users cannot answer your question.

However, the Java operator for "not equal to" is "!=".

// For example.
if (1 != 2) {
    System.out.println("1 doesn't equal 2");
}

The if-statement in the code above will always run, since 1 is not equal to 2.

It can sometimes be called a process chart.