从外部类获取变量值

public class OuterClass {
    private int outerVariable = 10;

    public class InnerClass {
        public void display() {
            System.out.println("Value of outerVariable: " + outerVariable);
        }
    }

    public static void main(String[] args) {
        OuterClass outer = new OuterClass();
        OuterClass.InnerClass inner = outer.new InnerClass();
        inner.display(); // 输出: Value of outerVariable: 10
    }
}

public class OuterClass {
    private static int outerStaticVariable = 20;

    public static class StaticInnerClass {
        public void display() {
            System.out.println("Value of outerStaticVariable: " + outerStaticVariable);
        }
    }

    public static void main(String[] args) {
        OuterClass.StaticInnerClass staticInner = new OuterClass.StaticInnerClass();
        staticInner.display(); // 输出: Value of outerStaticVariable: 20
    }
}

public class OuterClass {
    private int outerVariable = 30;

    public void someMethod() {
        class LocalInnerClass {
            public void display() {
                System.out.println("Value of outerVariable: " + outerVariable);
            }
        }

        LocalInnerClass localInner = new LocalInnerClass();
        localInner.display(); // 输出: Value of outerVariable: 30
    }

    public static void main(String[] args) {
        OuterClass outer = new OuterClass();
        outer.someMethod();
    }
}

public class OuterClass {
    private int outerVariable = 40;

    public void someMethod() {
        Runnable runnable = new Runnable() {
            @Override
            public void run() {
                System.out.println("Value of outerVariable: " + outerVariable);
            }
        };

        new Thread(runnable).start(); // 输出: Value of outerVariable: 40
    }

    public static void main(String[] args) {
        OuterClass outer = new OuterClass();
        outer.someMethod();
    }
}

public class OuterClass {
    private static int outerStaticVariable = 50; // 改为静态变量

    public static class StaticInnerClass {
        public void display() {
            System.out.println("Value of outerStaticVariable: " + outerStaticVariable);
        }
    }

    public static void main(String[] args) {
        OuterClass.StaticInnerClass staticInner = new OuterClass.StaticInnerClass();
        staticInner.display(); // 输出: Value of outerStaticVariable: 50
    }
}