Web Reference: boolean: The boolean data type has only two possible values: true and false. Use this data type for simple flags that track true/false conditions. This data type represents one bit of information, but its "size" isn't something that's precisely defined. char: The char data type is a single 16-bit Unicode character. Java Booleans Very often in programming, you will need a data type that can only have one of two values, like: YES / NO ON / OFF TRUE / FALSE For this, Java has a boolean data type, which can store true or false values. The name boolean comes from George Boole, a mathematician who first defined the logic system used in computers today. In this Java Tutorial, we explored the boolean data type. We learned how to declare, initialize, and update a boolean variable; observed its default value; printed it to the console; used it in conditional statements; and performed logical operations.
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