1.2 and Reserved Words 绪Keyword 论The following keywords are a special type of reference variable: super Reference variable referring to the immediate superclass. (引用父类的变量) this Reference variable referring to the current instance of an object. (引用一个对象的当前实例的变量) The void keyword is used only in the return value placeholder of a method declaration. void Indicates no return type for a method.
Java Programming, spring, 2012