demo成功运行

wxr

2022-10-31 11b72ba363dd4d7cbd5a220ec14942613dd7162e

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<?xml version="1.0" encoding="UTF-8"?> 
<project version="4"> 
  <component name="CompilerConfiguration"> 
    <bytecodeTargetLevel target="1.8" /> 
  </component> 
</project>