java如何判断空值
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Java判断变量是否为空问题的方法总结
目录前言StringUtil.isEmpty()"".equals()同时判断多个字符串是否为空两种判断，哪种性能更好？两种判断，哪种可读性和易于维护性都好总结前言[详细]
2023-04-22 10:32 分类：开发Problem with bluetooth service in J2ME don't discoverable
I try to create a service with: LocalDevice localDevice = LocalDevice.getLocalDevice(); localDevice.setDiscoverable(DiscoveryAgent.GIAC);[详细]
2022-12-28 16:15 分类：问答
加载中,请稍侯......