title: mvn dependency:tree prompt invalid JAVA_HOME directory error
body: <p>I am trying to access the <code>mvn:dependency:tree</code> in my <code>window cmd</code></p>
  
  <p>And it prompts me the following error:
  <img src="https://i.stack.imgur.com/ZO4Bp.jpg" alt="err1"></p>
  
  <p>Then I tried to check my <code>Java</code> installed location by doing so:</p>
  
  <p><img src="https://i.stack.imgur.com/KxtlC.jpg" alt="err2"></p>
  
  <p>So does this proves that my <code>JAVA_HOME</code> is setting at the correct directory?</p>