Java函数式编程（四）

package Object_Oriented;

import java.util.function.*;



public class Test {

    public static void main(String[] args) {
        String s = "255";
        Change(s,(String str)->{
            return Integer.parseInt(str);
        });
    }
    public static void Change(String s,Function function){
        Integer integer = function.apply(s);
        System.out.println(integer);
       
    }
}

package Object_Oriented;

import java.util.function.*;

//把字符串类型转换成数值类型，加10后重新转换成字符串类型

public class Test {

    public static void main(String[] args) {
        String s = "245";
        And_Then_Test(s,str->Integer.parseInt(str)+10,i->i+"");
    }
    public static void And_Then_Test(String s,Function f1,Function f2){
        String ss = f1.andThen(f2).apply(s);
        System.out.println(ss);
    }
}