public class Test1 {

  String name = "asnd";

  public static void main(String[] args) {

    Test1 test1 = new Test1();
    Inner mInner = test1.new Inner();
    mInner.print();
  }

  void show() {
    System.out.println("show");
  }

  public class Inner {

    String name = "123";
    private void print(){
      show();
      System.out.println(name);//打印的是123
      System.out.println(Test1.this.name);//打印的是asnd
    }
  }
}

  File file = new File("D:/cc.txt") {

      @Override
      public boolean delete() {
        System.out.println("是否删除y/n");
        Scanner input = new Scanner(System.in);
        String str = input.next();
        if (str.equals("y")) {
          return super.delete();
        }
        System.out.println("删除失败");
        return false;
      }
    };
    file.delete();

  }

new Thread() {

      @Override
      public void run() {
        System.out.println("线程开始!");
        try {
          Thread.sleep(2000);
          System.out.println("线程结束!");
        } catch (Exception e) {
          e.printStackTrace();
        }
        super.run();
      }

    }.start();

for (int i = 0; i < 5; i++) {
      final int finali = i;
      new Thread() {
        public void run() {
          System.out.println(finali);
        };
      }.start();

    }

public static void main(String[] args) {
    Lam mLam = new Lam();
    //第一种实现的方法
    mLam.to(new Ligh() {
      @Override
      public void shin() {
        System.out.println("on的第一种方法");
      }
    });
    //第二种实现方法
    class MyLam implements Ligh{

      @Override
      public void shin() {
        System.out.println("第二种");

      }}

    mLam.to(new MyLam());
  }
}

interface Ligh {
  void shin();
}

class Lam {
  public void to(Ligh ligh) {
    ligh.shin();
    System.out.println("on");
  }
}