package io;
import java.io.*;
public class DocTree {
File root = null;
public DocTree(File f){
this.root = f;
}
public void showTree(File root, int depth){
drawFile(root, depth);
if(!root.isFile()){
File[] files = root.listFiles();
if(files!=null&&files.length!=1){
for(int i=0; i<files.length; i++){
showTree(files[i], depth+1);
}
}
}
}
public void drawFile(File f, int depth){
for(int i=1; i<depth; i++){
System.out.print("│ ");
}
System.out.print("├─");
if(f.isFile()){
System.out.print(f.getName());
}
else{
System.out.print("[" + f.getName() + "]");
}
System.out.println();
}
public static void main(String[] args){
File root = new File("d:\\Apache2.2");
DocTree tree = new DocTree(root);
System.out.println(tree.toString(" ", ""));
}
public String toString(String leftStr, String append){
StringBuilder b = new StringBuilder();
b.append(append + root.getName());
b.append("\n");
if(!root.isFile()&&root.listFiles().length!=0){
File[] files = root.listFiles();
DocTree[] docTrees = new DocTree[files.length];
for(int i=0; i<docTrees.length; i++){
docTrees[i] = new DocTree(files[i]);
}
for (int i=0; i<files.length-1; i++){
b.append(leftStr + docTrees[i].toString(leftStr+"│", "├"));
}
b.append(leftStr + docTrees[docTrees.length-1].toString(leftStr + " ", "└"));
}
return b.toString();
}
}
参考
import java.util.ArrayList;
import java.util.List;
public class Folder {
public Folder(String title) {
this.title = title;
}
private String title;
private List<Folder> children = new ArrayList<Folder>();
public void addChild(Folder f) {
children.add(f);
}
public List<Folder> getChildren() {
return children;
}
public void setChildren(List<Folder> children) {
this.children = children;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String toString(String lftStr, String append) {
StringBuilder b = new StringBuilder();
b.append(append + title);
b.append("\n");
if (children.size() > 0) {
for (int i = 0; i < children.size() - 1; i++) {
b.append(lftStr + children.get(i).toString(lftStr + "│ ", "├-"));
}
b.append(lftStr+ children.get(children.size() - 1).toString(lftStr + " ", "└-"));
}
return b.toString();
}
public static void main(String[] args) {
Folder root = new Folder("菜单列表");
Folder f1 = new Folder("开始菜单");
root.addChild(f1);
Folder f1_1 = new Folder("程序");
f1.addChild(f1_1);
Folder f1_1_1 = new Folder("附件");
f1_1.addChild(f1_1_1);
Folder f1_1_1_1 = new Folder("娱乐");
f1_1_1.addChild(f1_1_1_1);
Folder f1_1_1_2 = new Folder("娱乐2");
f1_1_1.addChild(f1_1_1_2);
Folder f1_2 = new Folder("辅助工具");
f1.addChild(f1_2);
Folder f2 = new Folder("My Documents ");
//root.addChild(f2);
Folder f3 = new Folder("My Documents2 ");
//root.addChild(f3);
System.out.println(root.toString(" ", "$"));
}
}
责任编辑：小草
