java 中使用匿名类直接new接口详解及实例代码

package contract;
 
 public interface ISay {
   void sayHello();
 }

package jimmy;
import contract.ISay;
public class Program {
  public static void main(String[] args) {
    ISay say = new ISay() {     
      public void sayHello() {
        System.out.println("Hello java!");
      }
    };
  }
}

package jimmy;

import contract.ISay;
import java.io.PrintStream;

class Program$1
 implements ISay
{
 public void sayHello()
 {
  System.out.println("Hello java!");
 }
}