标题:java.lang.UnsupportedClassVersionError: com/lvshitech/java51/TestJDK has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
目标是jdk11
而实际是运行的环境是1.8,所以出现上述错误,
解决办法:调成一致(都弄成1.8或者11)
注:若上图是的低版本1.8,下图是高版本11,则说明目标是1.8【说明使用的规范是1.8的】,实际运行环境是11,(因为高版本11向下加粗样式低版本1.8兼容,所以不会出错)