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A modifier that indicates that a class or method is incomplete and must be implemented or extended by another class.
A statement that checks a condition and throws an AssertionError if it is false. Used for debugging.
A primitive data type that can store only the values True and False.
A control statement that breaks a loop or switch statement. Terminates the current flow of the program under specified conditions.
A primitive data type that can store 8-bit data values, ranging from -128 to 127.
A keyword that marks text blocks in switch statements. Each case is followed by a constant value and a colon.
A keyword that handles exceptions generated from try statements. This can be used only after try block.