Fifth time Java Job

 public  class        Homework1 { /**   *   @param   args  */ public  static  void   main (string[] args) { //  TODO auto-generated method stub  String str1=" Gengdan computer Java20170320        ";    System.out.println (str1.substring ( 9,17

 public  class        Homework2 { /**   *   @param   args  */ public  static  void   main (string[] args) { //  TODO auto-generated method stub  String str=" Gengdan computer Java20170320 "        ;        String newstr  =str.replaceall ("Ava", "2EE"  "replaced result:" +newstr); }}

 public  class        Homework3 { /**   *   @param   args  */ public  static  void   main (string[] args) { //  TODO auto-generated method stub  String str=" Gengdan computer Java 201703        ";        String newstr  =str.replaceall ("", ""  "replaced result:" +newstr); }}

 Public class homework4 {    /**     @param  args     * /     Publicstaticvoid  main (string[] args) {        //  TODO auto-generated method Stub        String str= "142202199607040111";                System.out.println ("The person's birthday is::" +str.substring (07,04));}    }

Fifth time Java Job