Which operator would you use if you want to check for inequality in a condition?

The operator used to check for inequality in a condition is the not equal operator, which is represented as "!=". When you use "!=" in a condition, you are essentially asking whether the values on either side of the operator are not equal to each other. If they are indeed different, the expression evaluates to true; otherwise, it evaluates to false. This is a fundamental part of conditional expressions in Java and many other programming languages, as it allows for effective decision-making within the code.

For instance, if you have an expression like "a != b", this checks if the value of 'a' is not equal to the value of 'b'. If 'a' is 5 and 'b' is 10, then the expression evaluates to true since 5 is not equal to 10.

The other operators listed pursue different purposes. The equality operator "==" checks if two values are equal, the greater-than operator ">" checks if one value is larger than another, and the addition operator "+" performs arithmetic addition rather than comparison. Thus, for identifying inequality, "!=" is clearly the correct choice.