JavaFX simple implementation of the "My Computer Explorer" effect _java

The example in this article describes the JavaFX simple implementation of the "My Computer Explorer" effect. Share to everyone for your reference. Specifically as follows:

1. Java Code:

Package TTT;
Import Java.io.File;
Import javafx.application.Application;
Import Javafx.beans.value.ChangeListener;
Import Javafx.beans.value.ObservableValue;
Import javafx.collections.FXCollections;
Import javafx.collections.ObservableList;
Import Javafx.scene.Scene;
Import Javafx.scene.control.TableColumn;
Import Javafx.scene.control.TableView;
Import Javafx.scene.control.TreeItem;
Import Javafx.scene.layout.BorderPane;
Import Javafx.scene.layout.HBox;
Import javafx.scene.layout.Priority;
Import Javafx.stage.Stage;
Import Javafx.scene.control.TreeView;
Import Javafx.scene.control.cell.PropertyValueFactory; public class TreeViews extends application {public static observablelist<filedetail> data = Fxcollections.observa
  Blearraylist ();
  public static void Main (string[] args) {launch (args);
    @Override public void Start (Stage primarystage) {Primarystage.settitle ("Javafx implementation \" My Computer \ "explorer"); treeitem<file> Rootitem = new treeitem<> (New File (SYSTEM.GEtenv ("COMPUTERNAME"));
      for (file File:File.listRoots ()) {Filetreeitem Rootsitem = new Filetreeitem (file);
    Rootitem.getchildren (). Add (Rootsitem);
    treeview<file> tree = new treeview<file> (Rootitem);
    Hbox root = new Hbox ();
    tableview<filedetail> TableView = new tableview<> (data);
    Tablecolumn<filedetail, string> firstcolumn = new tablecolumn<> ("file");
    Firstcolumn.setcellvaluefactory (New Propertyvaluefactory<filedetail, string> ("FileName"));
    Firstcolumn.setprefwidth (120);
    Tablecolumn<filedetail, string> secondcolumn = new tablecolumn<> ("type");
    Secondcolumn.setcellvaluefactory (New Propertyvaluefactory<filedetail, string> ("type"));
    Secondcolumn.setprefwidth (120);
    Tablecolumn<filedetail, string> thirdcolumn = new Tablecolumn<> ("Last Modified");
    Thirdcolumn.setcellvaluefactory (New Propertyvaluefactory<filedetail, string> ("LastModified")); Thirdcolumn.setpRefwidth (200);
    Tableview.getcolumns (). SetAll (Firstcolumn, Secondcolumn, Thirdcolumn);
    Hbox.sethgrow (tree, priority.always);
    Hbox.sethgrow (TableView, priority.always);
    Root.getchildren (). AddAll (Tree,tableview); Tree.getselectionmodel (). Selecteditemproperty (). AddListener (New changelistener<treeitem<file>> () {@ Override public void changed (OBSERVABLEVALUE&LT;? extends treeitem<file>> observable, treeitem<file> OldValue, treeitem<file> newvalue) {observablelist<treeitem<file>> treelist = NewValu
        E.getchildren ();
        observablelist<filedetail> tablelist = Fxcollections.observablearraylist ();
          for (treeitem<file> item:treelist) {filedetail filedetail = new Filedetail (Item.getvalue ());
        Tablelist.add (Filedetail);
      } data.setall (Tablelist);
    }
    });
    Primarystage.setscene (new Scene (root));
    Primarystage.setheight (600); PrimaRystage.show ();

 }
}

2. Java code:

Package TTT;
Import Java.io.File;
Import Java.text.SimpleDateFormat;
Import Java.util.Date;
  public class Filedetail {private String FileName;
  Private String lastmodified;
  Private Boolean isfile;
  Private Boolean Isfolder;
  private Boolean exists;
  Private String type;
  private long length;
  Private SimpleDateFormat FMT;
    Public filedetail (file file) {isfile = File.isfile ();
    Isfolder = File.isdirectory ();
    exists = file.exists (); if (exists) {this.
      FileName = File.getname ();
      FMT = new SimpleDateFormat ("Yyyy-mm-dd hh:mm");
      Date date = new Date (file.lastmodified ()); This.
      LastModified = Fmt.format (date);
      This.length = File.length ();
      if (isfolder) {this.type = "folder";
    else This.type = string.valueof (This.length/(long) 1024) + "KB";
  } public String GetFileName () {return FileName;
  public void Setfilename (String filename) {filename = filename; } public String GetlastmodiFied () {return lastmodified;
  } public void Setlastmodified (String lastmodified) {lastmodified = LastModified;
  Public String GetType () {return type;
  public void SetType (String type) {this.type = type;
  Public long GetLength () {return length;
  public void SetLength (long length) {this.length = length; }
}

3. Java code:

Package TTT;
Import Java.io.File;
Import javafx.collections.FXCollections;
Import javafx.collections.ObservableList;
Import Javafx.scene.control.TreeItem;
   public class Filetreeitem extends Treeitem<file> {private Boolean isleaf;
   Private Boolean Isfirsttimechildren = true;
  Private Boolean isfirsttimeleaf = true;
  Public filetreeitem (file file) {super (file); @Override public observablelist<treeitem<file>> GetChildren () {if (Isfirsttimechildren) {is
       Firsttimechildren = false;
    Super.getchildren (). SetAll (Buildchildren (this)); 
  return Super.getchildren ();
      @Override public boolean isleaf () {if (isfirsttimeleaf) {isfirsttimeleaf = false;
      File F = (file) getValue ();
    IsLeaf = F.isfile ();
  return isleaf; Private observablelist<treeitem<file>> Buildchildren (treeitem<file> TreeItem) {File F = TreeItem.g
  Etvalue ();
 if (f!= null && f.isdirectory ()) {   file[] files = f.listfiles ();
      if (Files!= null) {observablelist<treeitem<file>> children = fxcollections.observablearraylist ();
      for (File childfile:files) {children.add (new Filetreeitem (Childfile));
    return children;
} return Fxcollections.emptyobservablelist ();

 }
}

4. Operation Effect Screenshot:

I hope this article will help you with your Java programming.