JAva常用システムパラメータ取得方法【主にjvmに関連】

JAva常用システムパラメータ取得方法.

         System.out.println(System.getProperty("java.version"));   //java   
      System.out.println(System.getProperty("java.vendor"));    //Java     
      System.out.println(System.getProperty("java.vendor.url"));   //Java     
      System.out.println(System.getProperty("java.home"));   //jre  
      System.out.println(System.getProperty("java.vm.specification.version"));   //Java        
      System.out.println(System.getProperty("java.vm.specification.vendor"));   //Java        
      System.out.println(System.getProperty("java.vm.specification.name"));   //Java       
      System.out.println(System.getProperty("java.vm.version"));   //Java      
      System.out.println(System.getProperty("java.vm.vendor"));   //Java      
      System.out.println(System.getProperty("java.vm.name"));   //Java     
      System.out.println(System.getProperty("java.specification.version"));   //Java     
      System.out.println(System.getProperty("java.specification.vendor"));   //Java     
      System.out.println(System.getProperty("java.specification.name"));   //Java    
      System.out.println(System.getProperty("java.class.version"));   //Java    
      System.out.println(System.getProperty("java.class.path"));   //Java   
      System.out.println(System.getProperty("java.library.path"));   //Java lib  
      System.out.println(System.getProperty("java.io.tmpdir"));   //Java        
      System.out.println(System.getProperty("java.compiler"));   //Java   
      System.out.println(System.getProperty("java.ext.dirs"));   //Java    
      System.out.println(System.getProperty("os.name"));   //      
      System.out.println(System.getProperty("os.arch"));   //
         System.out.println(System.getProperty("os.version"));   //   
      System.out.println(System.getProperty("file.separator"));   //     
      System.out.println(System.getProperty("path.separator"));   //     
      System.out.println(System.getProperty("line.separator"));   //     
      System.out.println(System.getProperty("user.name"));   //   
      System.out.println(System.getProperty("user.home"));   //               
      System.out.println(System.getProperty("user.dir")); //