CollectionUtils 5.22.0 API

All Implemented Interfaces:


public class CollectionUtils

Author:: gusd @Date 2022/10/18

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`static <T> boolean`	`containsNull(Collection<T> collection)`	检测集合中是否包含 null
`static <T> boolean`	`checkNullOrContainsNull(Collection<T> collection)`	检测集合为 null 或者元素包含 null
`static <T> boolean`	`checkNullOrEmptyOrContainsNull(Collection<T> collection)`	检测集合为 null 或者为空集合，或者元素包含 null
`static <T> List<T>`	`getAndDeduplicate(List<T> list)`	获取列表内容并进行排重

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
- Method Detail
  - containsNull
```
 static <T> boolean containsNull(Collection<T> collection)
```
    检测集合中是否包含 null
    
    Returns:
    
    true 包含，false 不包含
  - checkNullOrContainsNull
```
 static <T> boolean checkNullOrContainsNull(Collection<T> collection)
```
    检测集合为 null 或者元素包含 null
    
    Returns:
    
    true 集合为 null 或者包含元素为 null
  - checkNullOrEmptyOrContainsNull
```
 static <T> boolean checkNullOrEmptyOrContainsNull(Collection<T> collection)
```
    检测集合为 null 或者为空集合，或者元素包含 null
    
    Returns:
    
    true 集合为 null 或者空集合或者元素包含 null
  - getAndDeduplicate
```
 static <T> List<T> getAndDeduplicate(List<T> list)
```
    获取列表内容并进行排重
    
    Parameters:
    
    list - 原始列表
    
    Returns:
    
    排重后的列表