Builder 模式也叫建造者模式，builder模式的作用将一个复杂对象的构建与他的表示分离，一步一步创建一个复杂对象的创建型模式。在不知道内部建造细节的情况下，可以更精细的控制对象的构造流程。目的就是为了解耦。
public class UserInfo {
private String name;
private String zhName;
private String account;
private String password;
public UserInfo(String name, String zhName, String account, String password) {
this.name = name;
this.zhName = zhName;
this.account = account;
this.password = password;
}
public UserInfo() {
}
public static class Builder{
private String name;
private String zhName;
private String account;
private String password;
public Builder name(String name){
this.name = name;
return this;
}
public Builder zhName(String zhName){
this.zhName = zhName;
return this;
}
public Builder account(String account){
this.account = account;
return this;
}
public Builder password(String password){
this.password = password;
return this;
}
public UserInfo build(){
return new UserInfo(this.name,this.zhName,this.account,this.password);
}
}
public static Builder builder() {
return new Builder();
}
@Override
public String toString() {
return "UserInfo{" +
"name='" + name + '\'' +
", zhName='" + zhName + '\'' +
", account='" + account + '\'' +
", password='" + password + '\'' +
'}';
}
}
public static void main(String[] args) {
UserInfo userInfo=UserInfo.builder()
.name("小明")
.zhName("夏明")
.account("xxx@qw.com")
.password("asdqwer")
.build();
System.out.println(userInfo);
}
UserInfo{name='小明', zhName='夏明', account='xxx@qw.com', password='asdqwer'}
