+substring(beginIndex: int) return type string

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import java.lang.String;
class subStringstart{
                    public static void main(String[] arg){ 
                          String str1="Welcome to Java";
                          String str2=str1.substring(3);
                         
                          System.out.println("str1: "+str1);
                          System.out.println("str2=str1.substring(3): "+str2);
                         }
                     }

 OutPut  :   str1: Welcome to Java
                 str2=str1.substring(3): come to Java

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