object的obj

ublic class StringCompareEmp{
   public static void main(String args[]){
      String str = "Hello World";
      String anotherString = "hello world";
      Object objStr = str;                                          //这个     Object objStr = str; 是什么意思
 
      System.out.println( (anotherString) );
      System.out.println( (anotherString) );  //忽略大小写
      System.out.println( (objStr.toString()));
   }
}