java study
- 主要原因 本机的JDK版本与项目的语言级别不同造成的
- 点击File–>Settings进入界面找到如图位置 并将相信应位置设置成自己的安装版本号, Build,Execution,Deployment --> Java Compiler --> 设置 project bytecode version [8] Module 作相应设置
- 下一步,点击File选择Project Structure…进入。设置 Project language level -->8
java study
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