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java开发常用工具方法 [2018/01/18 00:29] jordan 创建 |
java开发常用工具方法 [2023/03/08 16:09] (current) xujianglong ↷ Page moved from 内部资料:java开发常用工具方法 to java开发常用工具方法 |
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- | # Java开发常用工具方法 | + | ====== |
- | * 集合判null、空: | + | |
- | ```java | + | < |
package org.apache.commons.collections; | package org.apache.commons.collections; | ||
method CollectionUtils.isNotEmpty(); | method CollectionUtils.isNotEmpty(); | ||
- | ``` | + | </ |
+ | * 数组判null、空: | ||
- | * 数组判null、空: | + | < |
- | + | ||
- | ```java | + | |
package org.apache.commons.lang; | package org.apache.commons.lang; | ||
method ArrayUtils.isEmpty(); | method ArrayUtils.isEmpty(); | ||
- | ``` | + | </ |
+ | * 字符串判null、空: | ||
- | * 字符串判null、空: | + | < |
- | + | ||
- | ```java | + | |
package org.apache.commons.lang; | package org.apache.commons.lang; | ||
method StringUtils.isNotBlank(); | method StringUtils.isNotBlank(); | ||
- | ``` | + | </ |
+ | * 获取当前毫秒数: | ||
- | * 获取当前毫秒数: | + | < |
- | + | ||
- | ```java | + | |
System.currentTimeMillis(); | System.currentTimeMillis(); | ||
- | ``` | + | </ |
+ | * 数据转List: | ||
- | * 数据转List: | + | <code java> |
+ | List< | ||
+ | </ | ||
- | ```java | ||
- | List< | ||
- | ``` |