Java 19-15 file class How to change file names in bulk

1 /*2  　　  Requirements :
* Change the name of the video below H:\ kingdoms to3 00?_ Introduction. avi4   5  　　 Ideas:6 A: Package directory7 B: Gets the file array for all files in this directory8 C: Traverse the file array to get each file object9 D: Stitch A new name, then rename it. Ten  */ One  PackageZl_file; A  - ImportJava.io.File; -  Public classFileTest3 { the  -      Public Static voidMain (string[] args) { -          -         //Package Catalog +File Forder =NewFile ("H:\\ Kingdoms"); -          +         //get file array for all files in this directory Afile[] FileList =forder.listfiles (); at          -         //iterate over the file array to get each file object -          for(File file:filelist) { -             //Kingdoms _001_[Storytelling net]_ Taoyuan three jieyi. avi changed to 001_ Taoyuan three jieyi. avi -             //first get the name -String name =file.getname (); in             //intercept the part of the name that you want to modify -             //First Intercept ' 001 ' out, and its left is _, and then intercept 3 characters from _ to             //index position of first fetch _ +             intIndex1 = Name.indexof ("_"); -String newname1 = name.substring (index1 + 1, index1+4);//package left without packet right the             //System.out.println (newname1); *              $             //then intercept ' Taoyuan three jieyi. avi ' OutPanax Notoginseng             intIndex2 = Name.lastindexof ("_"); -String newname2 = name.substring (INDEX2);//from _ To the end, intercept it. the              +             //Stitching AString result =Newname1.concat (newname2); the System.out.println (result); +             /* - 001_ Taoyuan three jieyi. avi $ 002_ 10 The usual mess of the waiter. avi $ 003_ in the Battle of Lu bu. avi - The Battle of 004_ Chibi. avi -              */ the         } -         Wuyi          the     } -}

Java 19-15 file class How to change file names in bulk