本帖最后由 shaoshuai 于 2015-2-5 11:33 编辑
话不多少,直接上代码:- public class User {
-
- private long id;
- private String username;
- private String password;
- private String email;
- private String address;
-
- public User(){
-
- }
-
- public User(UserBuilder builder) {
- this.id = builder.id;
- this.username = builder.username;
- this.password = builder.password;
- this.email = builder.email;
- this.address = builder.address;
- }
- public long getId() {
- return id;
- }
- public String getUsername() {
- return username;
- }
- public String getPassword() {
- return password;
- }
- public String getEmail() {
- return email;
- }
- public String getAddress() {
- return address;
- }
-
- @Override
- public int hashCode() {
- final int prime = 31;
- int result = 1;
- result = prime * result + (int) (id ^ (id >>> 32));
- return result;
- }
- @Override
- public boolean equals(Object obj) {
- if (this == obj)
- return true;
- if (obj == null)
- return false;
- if (getClass() != obj.getClass())
- return false;
- User other = (User) obj;
- if (id != other.id)
- return false;
- return true;
- }
- static class UserBuilder {
- private long id;
- private String username;
- private String password;
- private String email;
- private String address;
-
- public UserBuilder(long id, String username, String password) {
- this.id = id;
- this.username = username;
- this.password = password;
- }
-
- public UserBuilder email(String email) {
- this.email = email;
- return this;
- }
-
- public UserBuilder address(String address) {
- this.address = address;
- return this;
- }
-
- public User build() {
- return new User(this);
- }
- }
-
- }
复制代码
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