TheSameName.this.x++; // 调用外部类的x

public class TheSameName {
private int x = 7; // 外部类的x

private class Inner {
    private int x = 9;// 内部类的x

    public void doit() {
        int x = 11; // 局部变量x
        this.x++; // 调用内部类的x
        TheSameName.this.x++; // 调用外部类的x
    }
}

}