liudong-xyz
liudong-xyz
/ RemoveElementsFormArrayList.java
Last active
August 2, 2019 16:04
remove elements from ArrayList using loop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import java.util.ArrayList; | |
| import java.util.Iterator; | |
| import java.util.List; | |
| /** | |
| * remove elements from ArrayList using loop | |
| * | |
| * @author: liudong | |
| * @date: 2019/6/24 | |
| * @java-version: 11 |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import java.util.Objects; | |
| /** | |
| * use Objects.equals | |
| * | |
| * @author: liudong | |
| * @date: 2019/6/28 | |
| * @java-version: 11 | |
| */ | |
| public class JDK7Equals { |
liudong-xyz
/ UseStringUtils.java
Last active
August 2, 2019 16:00
use StringUtils in [apache-commons-lang3]
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import org.apache.commons.lang3.StringUtils; | |
| /** | |
| * use StringUtils | |
| * jar: org.apache.commons -> commons-lang3 | |
| * | |
| * @author: liudong | |
| * @date: 2019/6/28 | |
| * @java-version: 11 | |
| */ |
liudong-xyz
/ GetSpringBeanApplication.java
Last active
August 2, 2019 15:58
get spring-bean from a class not in the spring-container
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong; | |
| import xyz.liudong.nonspringbean.NONSpringBean; | |
| import org.springframework.boot.SpringApplication; | |
| import org.springframework.boot.autoconfigure.SpringBootApplication; | |
| /** | |
| * Application | |
| * | |
| * @author: liudong |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong.entity; | |
| import java.util.List; | |
| /** | |
| * department entity | |
| * | |
| * @author: liudong | |
| * @date: 2019/7/30 | |
| */ |
liudong-xyz
/ CustomFunctionalInterface.java
Last active
August 2, 2019 17:45
custom functional interfaces
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong; | |
| import java.util.Objects; | |
| /** | |
| * create custom functional interface | |
| * | |
| * @author: liudong | |
| * @date: @date: 2019/8/2 | |
| * @java-version: 11 |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong; | |
| /** | |
| * break multilevel loop | |
| * | |
| * @author: liudong | |
| * @date: 2019/7/15 | |
| * @java-version: 11 | |
| */ | |
| public class BreakLoop { |
liudong-xyz
/ ArrayListRemoveDuplicates.java
Last active
August 2, 2019 15:55
remove duplicates from ArrayList
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong; | |
| import xyz.liudong.entity.User; | |
| import java.util.ArrayList; | |
| import java.util.Arrays; | |
| import java.util.List; | |
| import java.util.TreeSet; | |
| import java.util.stream.Collectors; |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong; | |
| import xyz.liudong.entity.User; | |
| import java.util.ArrayList; | |
| import java.util.Arrays; | |
| import java.util.List; | |
| import java.util.Objects; | |
| /** |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package xyz.liudong; | |
| import xyz.liudong.entity.User; | |
| import java.util.ArrayList; | |
| import java.util.Arrays; | |
| import java.util.List; | |
| import java.util.stream.Collectors; | |
| /** |
OlderNewer