115, Java class String in the string concatenation using concat

01. code is as follows:

Package TIANPAN; 

/ ** 
 * Notes document here 
 * 
 * @author Tin Pan micro-channel 382 477 247
  * / 
public  class TestDemo {
     public  static  void main (String args []) { 
        String STR = "Hello" .concat ( "World") ;         // equivalent to "+" 
        System.out.println (STR); 
    } 
}

 

02. Results are as follows:

 

 

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