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public class UserInfo {
private String name;
private String height;
private int age;
private int year;
public String getName() {
return name;
}
public String getHeight() {
return height;
}
public int getAge() {
return age;
}
public int getYear() {
return year;
}
@Override
public String toString() {
return name+"_"+height+"_"+age+"_"+year;
}
private UserInfo(Builder builder) {
this.name = builder.name;
this.height = builder.height;
this.age = builder.age;
this.year = builder.year;
}
public static class Builder {
private String name;
private String height;
private int age;
private int year;
public Builder name(String name) {
this.name = name;
return this;
}
public Builder height(String height) {
this.height = height;
return this;
}
public Builder age(int age) {
this.age = age;
return this;
}
public Builder year(int year) {
this.year = year;
return this;
}
public UserInfo builder() {
return new UserInfo(this);
}
}
}
使用
UserInfo userInfo = new UserInfo.Builder()
.name("kawa")
.height("212")
.age(12)
.year(21)
.builder();
LogUtils.e(userInfo.toString());
使用Builder模式赋值可以很清晰的知道自己传入的值是什么,如果是使用构造函数传入值的话,不知道当前的值对应是啥,值一多就容易混淆,
public UserInfo(String name, String height, int age, int year) {
this.name = name;
this.height = height;
this.age = age;
this.year = year;
}