https://github.com/kkimsungchul/study/blob/master/Spring%20Boot/%5BSpring%20Boot%5D%20lombok%20%EC%82%AC%EC%9A%A9.txt
위의 링크를 보고 lombok을 세팅하면 굳이 아래와 같이 builder 을 가진 클래스를 생성하지 않고
Builder 패턴을 사용할 수 있음
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package EffectiveJava.builder_2;
public class BuilderTest {
public static void main(String[]args){
UserVO userVO = UserVO
.builder()
.setAge(33)
.setName("김성철")
.build();
System.out.println(userVO);
MemberVO m = new MemberVO.Builder()
.setEmail("메일주소")
.setPassword("비밀번호")
.setUsername("김성철")
.build();
BoardVO b = new BoardVO.Builder()
.setContent("내용")
.setTitle("제목")
.setSeq(1)
.setWriter("작성자")
.build();
System.out.println("####");
System.out.println(b.toString());
}
}
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package EffectiveJava.builder_2;
public class UserVO {
private String name;
private int age;
public UserVO(String name, int age) {
this.name = name;
this.age = age;
}
public static Builder builder() {
return new Builder();
}
@Override
public String toString() {
return "UserVO{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
static class Builder{
private String name;
private int age;
public Builder(){}
public Builder setName(String name){
this.name = name;
return this;
}
public Builder setAge(int age){
this.age = age;
return this;
}
public UserVO build(){
return new UserVO(name,age);
}
}
}
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package com.sungchul.equals;
import java.util.Objects;
public class MemberVO {
private String username;
private String email;
private String password;
private MemberVO(Builder builder) {
this.username = builder.username;
this.email = builder.email;
this.password = builder.password;
}
public String getUsername() {
return username;
}
public String getEmail() {
return email;
}
public String getPassword() {
return password;
}
public static class Builder {
private String username;
private String email;
private String password;
public Builder setUsername(String username) {
this.username = username;
return this;
}
public Builder setEmail(String email) {
this.email = email;
return this;
}
public Builder setPassword(String password) {
this.password = password;
return this;
}
public MemberVO build() {
return new MemberVO(this);
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
MemberVO memberVO = (MemberVO) o;
return Objects.equals(username, memberVO.username) &&
Objects.equals(email, memberVO.email) &&
Objects.equals(password, memberVO.password);
}
@Override
public int hashCode() {
return Objects.hash(username, email, password);
}
}
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package EffectiveJava.builder_2;
public class BoardVO {
private int seq;
private String title;
private String content;
private String writer;
public BoardVO(Builder builder){
this.title = builder.title;
this.content = builder.content;
this.seq = builder.seq;
this.writer = builder.writer;
}
@Override
public String toString() {
return "BoardVO{" +
"seq=" + seq +
", title='" + title + '\'' +
", content='" + content + '\'' +
", writer='" + writer + '\'' +
'}';
}
public static class Builder{
private int seq;
private String title;
private String content;
private String writer;
public Builder setSeq(int seq){
this.seq = seq;
return this;
}
public Builder setTitle(String title){
this.title = title;
return this;
}
public Builder setContent(String content){
this.content = content;
return this;
}
public Builder setWriter(String writer){
this.writer = writer;
return this;
}
public BoardVO build(){
return new BoardVO(this);
}
}
}
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public class Person {
private String name;
private int age;
private String address;
private String sex;
private boolean marry;
private Person(Builder builder){
this.name = builder.name;
this.age = builder.age;
this.address = builder.address;
this.sex = builder.sex;
this.marry = builder.marry;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public boolean isMarry() {
return marry;
}
public void setMarry(boolean marry) {
this.marry = marry;
}
@Override
public String toString() {
return "Person{" +
"name='" + name + '\'' +
", age=" + age +
", address='" + address + '\'' +
", sex='" + sex + '\'' +
", marry=" + marry +
'}';
}
public static class Builder{
private String name;
private int age;
private String address;
private String sex;
private boolean marry;
public Builder setName(String name){
this.name = name;
return this;
}
public Builder setAge(int age){
this.age = age;
return this;
}
public Builder setAddress(String address){
this.address = address;
return this;
}
public Builder setSex(String sex){
this.sex = sex;
return this;
}
public Builder setMarry(boolean marry){
this.marry = marry;
return this;
}
public Person build(){
return new Person(this);
}
}
}
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