java总结

<span class="portrait"></span><p class="slideShine">xiaofang.bk</p> / 2025-02-10 / 原文

java闭包：

//Closure 类是一个内部类，它可以访问外部类 TeacherProgramer 的成员变量 name。这确实是一种闭包的体现，因为它捕获了外部类的状态。
public class Programer {

    public String name;

    public Programer() {
    }

    public Programer(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void wrok() {
        System.out.println(name + "在干xxx");
    }
}




public interface Teacher {
    void work();

}


public class TeacherProgramer extends Programer {
    public TeacherProgramer() {
    }

    public TeacherProgramer(String name) {
        super(name);
    }

    public class Closure implements Teacher {
        public void work() {
            System.out.println(name + "hello word");
        }

    }

    public Teacher getCallBack() {
            return new Closure();
    }



public static void main(String[]args){
        TeacherProgramer teacherProgramer=new TeacherProgramer("法外狂徒张三");
        teacherProgramer.getCallBack().work();

        }
}

//使用Lambda表达式的例子中，我们创建了一个实现了 Teacher 接口的匿名函数，它捕获了 teacherProgramer 对象的 name 成员，并可以在调用 work 方法时使用它。这就是Java 8及更高版本中更常见的闭包
public static void main(String[] args) {
    TeacherProgramer teacherProgramer = new TeacherProgramer("法外狂徒张三");
    Teacher callBack = () -> System.out.println(teacherProgramer.name + "hello word");
    callBack.work();
}