1 需求

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2 接口

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3 示例

public class RunoobTest {// 成员变量private int instanceVar;// 静态变量private static int staticVar;public void method(int paramVar) {// 局部变量int localVar = 10;// 使用变量instanceVar = localVar;staticVar = paramVar;System.out.println("成员变量: " + instanceVar);System.out.println("静态变量: " + staticVar);System.out.println("参数变量: " + paramVar);System.out.println("局部变量: " + localVar);}public static void main(String[] args) {RunoobTest v = new RunoobTest();v.method(20);}
}

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4 参考资料