JAVA-J2SE Learning Notes-tree-like presentation file structure

1. Use java.io related tree to display file structure

2. Determine if the given path is dir, is recursive, and each recursive layer is indented once

3. Code

Package Test;import Java.io.file;public class Testhierarchical {public static void main (string[] args) {File File = new Fi Le ("d:/workspaces/eclipse/test"); Tree (file, 0);} private static void Tree (File f, int level) {String prestr = ' "; for (int i = 0; I < level; i++) {prestr + = "---";} file [] fs = F.listfiles (), for (File tmp:fs) {System.out.println (Prestr+tmp.getname ()), if (Tmp.isdirectory ()) {Tree (tmp , level+1);}}}

　　

4. Operation Result:

JAVA-J2SE Learning Notes-tree-like presentation file structure