Java fluent风格（转载）

转载：java Fluent风格

一.我们先写一个通常的，即不使用fluent风格

1.实体类

package com.xbq.demo.stu;

/**
 * @ClassName: Student 
 * @Description: TODO(学生实体类) 
 * @author xbq 
 * @date 2017-3-26 下午9:54:00 
 */
public class Student {

    private String name;
    private String address;
    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    
    @Override
    public String toString() {
        return "Student [name=" + name + ", address=" + address + "]";
    }
}

2.测试类

package com.xbq.demo.stu;

/**
 * @ClassName: Test 
 * @Description: TODO(测试学生实体，非 fluent风格) 
 * @author xbq 
 * @date 2017-3-26 下午9:55:34 
 */
public class Test {

    public static void main(String[] args) {
        Student student = new Student();
        student.setName("张三");
        student.setAddress("广东深圳");
        System.out.println(student);
    }
}

二.再写一个使用fluent风格的

1.实体类

package com.xbq.demo;

/**
 * @ClassName: Student  
 * @Description: TODO(学生实体类) 
 * @author xbq 
 * @date 2017-3-26 下午7:56:20 
 */
public class Student {

    private String name;
    private String address;
    
    // 设置name的值，并且返回实体
    public Student setName(String name){
        this.name = name;
        return this;
    }
    
    // 设置address的值，并且返回实体
    public Student setAddress(String address){
        this.address = address;
        return this;
    }
    
    public String getName() {
        return name;
    }
    public String getAddress() {
        return address;
    }
    
    // 返回学生实体，可以做成单例
    public static Student build(){
        return new Student();
    }
    
    @Override
    public String toString() {
        return "Student [name=" + name + ", address=" + address + "]";
    }
}

2.测试类

package com.xbq.demo;

/**
 * @ClassName: Test 
 * @Description: TODO(测试学生实体， fluent风格) 
 * @author xbq 
 * @date 2017-3-26 下午9:59:22 
 */
public class Test {

    public static void main(String[] args) {
        Student student = Student.build().setName("李四").setAddress("广东广州");
        System.out.println(student.getName());
    }
}