WebDec 7, 2024 · Java has an alternative for us, though, in the form of the not operator: boolean isValid = true ; if (!isValid) { System.out.println ( "Invalid" ); } 3. The not Operator The not operator is a logical operator, represented in Java by the ! symbol. It's a unary operator that takes a boolean value as its operand. WebAug 3, 2024 · int a = 1; a++; System.out.println(a); Output The value of a is increased by just 1. Using += in Java Loops The += operator can also be used with for loop: for(int i=0;i<10;i+=2) { System.out.println(i); } Output The value of i is incremented by 2 at each iteration. Working with multiple data types
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