首先：要有一个函数值接口,假定就是一个简单的打印日志的接口
interface PrintLog{
    String printLog();
}

class demo{
    main(){ //main方法
        String a = "a";
        String b = "b";
        String c = "c";
        printNewLog(1,new PrintLog(){
            return a+b+c;
        })

}

   public static void printNewLog(int level, PrintLog pl){
       if(level == 1){
       sout(pl.printLog())
        }
    }
}

# 第一步进行简化
interface PrintLog{
    String printLog();
}

class demo{
    main(){ //main方法
        String a = "a";
        String b = "b";
        String c = "c";
        printNewLog(1,() -> {
            return a+b+c;
        })

}

   public static void printNewLog(int level, PrintLog pl){
       if(level == 1){
       sout(pl.printLog())
        }
    }
}

# 第二步进行简化
interface PrintLog{
    String printLog();
}

class demo{
    main(){ //main方法
        String a = "a";
        String b = "b";
        String c = "c";
        printNewLog(1,() -> a+b+c )

}

   public static void printNewLog(int level, PrintLog pl){
       if(level == 1){
       sout(pl.printLog())
        }
    }
}

分享到：

赞(0) 打赏