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How to open a folder by clicking an icon in the toolbar by using SWT?

I have a code that generates a UI using SWT.

In this UI, there is a toolbar and and one of the icons in the toolbar should open a folder when you click on it.

How can I set this icon to open a folder when you click on it?

I am sending the code below:

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
import org.eclipse.swt.layout.FillLayout;

public class Gui {
    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setLayout(new GridLayout());
        // SWT.BOTTOM to show at the bottom
        CTabFolder folder = new CTabFolder(shell, SWT.TOP);
        GridData data = new GridData(GridData.FILL, GridData.FILL, true, true, 5, 5);
        CTabItem cTabItem1 = new CTabItem(folder, SWT.NONE);
        CTabItem cTabItem2 = new CTabItem(folder, SWT.NONE);
        CTabItem cTabItem3 = new CTabItem(folder, SWT.NONE);
        Image image_Folder = new Image(display, "folder.png");
        Image image_shape_triangle = new Image(display, "shape_triangle.png");
        Image image_document = new Image(display, "document.png");
        Image image_delete = new Image(display, "delete.png");
        Image image_floppy_disk = new Image(display, "floppy_disk.png");
        Image image_navigate_right = new Image(display, "navigate_right.png");
     // -----------here starts TAB 1 --------------------  
        Composite compTab1 = new Composite(folder, SWT.NULL);
        GridLayout gridLayout1 = new GridLayout();
        compTab1.setLayoutData(new GridData());
        ToolBar toolBar1 = new ToolBar(compTab1, SWT.FLAT);
        ToolItem item1 = new ToolItem(toolBar1, SWT.PUSH);
        item1.setImage(image_Folder); item1.setText("Select Files/Directory"); item1.setToolTipText("Select the files or the directory you want to analyze");
        ToolItem item11 = new ToolItem(toolBar1, SWT.PUSH);
        item11.setImage(image_shape_triangle); item11.setText("Select Changelist"); item11.setToolTipText("Select the files in the changelist");
        ToolItem item111 = new ToolItem(toolBar1, SWT.PUSH);
        item111.setImage(image_document); item111.setText("Select Submit File"); item111.setToolTipText("Select the submit file");
        ToolItem item1111 = new ToolItem(toolBar1, SWT.PUSH);
        item1111.setImage(image_delete); item1111.setText("Clear List"); item1111.setToolTipText("Delete the list of all files below");
        new ToolItem(toolBar1, SWT.SEPARATOR);

        ToolItem item12 = new ToolItem(toolBar1, SWT.PUSH);
        item12.setImage(image_floppy_disk); item12.setText("Save"); item12.setToolTipText("Save the list of file below to a XML file for future reference");
        new ToolItem(toolBar1, SWT.SEPARATOR);
        ToolItem item13 = new ToolItem(toolBar1, SWT.PUSH);
        item13.setImage(image_navigate_right); item13.setText("Specify Checks"); item13.setToolTipText("Move to the next tab to select the list of checks");
        new ToolItem(toolBar1, SWT.SEPARATOR);
        Label lblLine1 = new Label(compTab1, SWT.SEPARATOR | SWT.SHADOW_OUT | SWT.HORIZONTAL);
        lblLine1.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        Composite compButtons1 = new Composite(compTab1, SWT.NULL);
        FillLayout fillLayout1 = new FillLayout();
        fillLayout1.type = SWT.HORIZONTAL;
        //Button b1 = new Button(compButtons, SWT.PUSH); b1.setText("B1");
        //Button b1Wide = new Button(compButtons, SWT.PUSH); b1Wide.setText("Wide Button 1");
        //Button buton1 = new Button(compButtons, SWT.PUSH); buton1.setText("Button 1");
// -----------here starts TAB 2 --------------------      
        Image image_folder_document = new Image(display, "folder_document.png");
        Image image_selection_delete_2 = new Image(display, "selection_delete_2.png");

        Composite compTab2 = new Composite(folder, SWT.NULL);
        GridLayout gridLayout2 = new GridLayout();
        compTab2.setLayoutData(new GridData());
        ToolBar toolBar2 = new ToolBar(compTab2, SWT.FLAT);

        ToolItem item2 = new ToolItem(toolBar2, SWT.PUSH);
        item2.setImage(image_folder_document); item2.setText("Load saved check list"); item2.setToolTipText("Load the saved list of checks if you saved from previous runs");
        ToolItem item22 = new ToolItem(toolBar2, SWT.PUSH);
        item22.setImage(image_selection_delete_2); item22.setText("Unselect all"); item22.setToolTipText("Unselec all checks below");
        ToolItem item222 = new ToolItem(toolBar2, SWT.PUSH);
        item222.setImage(image_floppy_disk); item222.setText("Save selections"); item222.setToolTipText("Save the list of checks to a XML file for future reference");
        new ToolItem(toolBar2, SWT.SEPARATOR);
        ToolItem item23 = new ToolItem(toolBar2, SWT.PUSH);
        item23.setImage(image_navigate_right); item23.setText("Run checks"); item23.setToolTipText("Run the checks against the files you selected");
        new ToolItem(toolBar2, SWT.SEPARATOR);
        Label lblLine2 = new Label(compTab2, SWT.SEPARATOR | SWT.SHADOW_OUT | SWT.HORIZONTAL);
        lblLine2.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        Composite compButtons2 = new Composite(compTab2, SWT.NULL);
        FillLayout fillLayout2 = new FillLayout();
        fillLayout2.type = SWT.HORIZONTAL;
        //Button b1 = new Button(compButtons, SWT.PUSH); b1.setText("B1");
        //Button b1Wide = new Button(compButtons, SWT.PUSH); b1Wide.setText("Wide Button 1");
        //Button buton1 = new Button(compButtons, SWT.PUSH); buton1.setText("Button 1");
     // -----------here starts TAB 3 --------------------      
        Image image_breakpoint = new Image(display, "breakpoint.png");
        Image image_redo = new Image(display, "redo.png");
        Image image_gecko = new Image(display, "gecko.png");
        Image image_navigate_left2 = new Image(display, "navigate_left2_orange.png");
        Image image_exit = new Image(display, "exit.png");
        Composite compTab3 = new Composite(folder, SWT.NULL);
        GridLayout gridLayout3 = new GridLayout();
        compTab3.setLayoutData(new GridData());
        ToolBar toolBar3 = new ToolBar(compTab3, SWT.FLAT);
        ToolItem item3 = new ToolItem(toolBar3, SWT.PUSH);
        item3.setImage(image_floppy_disk); item3.setText("Save"); item3.setToolTipText("Save the list of files and checks to a XML file for future reference");
        new ToolItem(toolBar3, SWT.SEPARATOR);
        ToolItem item33 = new ToolItem(toolBar3, SWT.PUSH);
        item33.setImage(image_breakpoint); item33.setText("Stop checks"); item33.setToolTipText("Stop running the checks");
        ToolItem item333 = new ToolItem(toolBar3, SWT.PUSH);
        item333.setImage(image_redo); item333.setText("Rerun failed"); item333.setToolTipText("Rerun failed checks");
        new ToolItem(toolBar3, SWT.SEPARATOR);
        ToolItem item3333 = new ToolItem(toolBar3, SWT.PUSH);
        item3333.setImage(image_floppy_disk); item3333.setText("Save results"); item3333.setToolTipText("Save the results to HTML or XML file");
        new ToolItem(toolBar3, SWT.SEPARATOR);
        ToolItem item33333 = new ToolItem(toolBar3, SWT.PUSH);
        item33333.setImage(image_gecko); item33333.setText("Save to geck"); item33333.setToolTipText("Save the results to a geck. Geck number will be asked when you click this button");
        new ToolItem(toolBar3, SWT.SEPARATOR);
        ToolItem item333333 = new ToolItem(toolBar3, SWT.PUSH);
        item333333.setImage(image_navigate_left2); item333333.setText("Start over"); item333333.setToolTipText("Go back to the first tab to start over");
        ToolItem item3333333 = new ToolItem(toolBar3, SWT.PUSH);
        item3333333.setImage(image_exit); item3333333.setText("configuration"); item3333333.setToolTipText("Quit the tool");
        new ToolItem(toolBar3, SWT.SEPARATOR);
        Composite compButtons3 = new Composite(compTab3, SWT.NULL);
        FillLayout fillLayout3 = new FillLayout();
        fillLayout2.type = SWT.HORIZONTAL;
        Label lblLine3 = new Label(compTab3, SWT.SEPARATOR | SWT.SHADOW_OUT | SWT.HORIZONTAL);
        lblLine3.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        //Button b1 = new Button(compButtons, SWT.PUSH); b1.setText("B1");
        //Button b1Wide = new Button(compButtons, SWT.PUSH); b1Wide.setText("Wide Button 1");
        //Button buton1 = new Button(compButtons, SWT.PUSH); buton1.setText("Button 1");
        shell.addShellListener(new ShellListener() {

            public void shellIconified(ShellEvent e) {
            public void shellDeiconified(ShellEvent e) {
            public void shellDeactivated(ShellEvent e) {
            public void shellClosed(ShellEvent e) {
                System.out.println("Client Area: " + shell.getClientArea());
            public void shellActivated(ShellEvent e) {
                int frameX = shell.getSize().x - shell.getClientArea().width;
                int frameY = shell.getSize().y - shell.getClientArea().height;
                shell.setSize(1200 + frameX, 1000 + frameY);
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {

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1 Solution
see the files attached to this question:
the first item of the first tab opens the folder. this is the code that opens the folder:

DirectoryDialog dlg = new DirectoryDialog(shell);
String dir =;

string "dir" returns the chosen file.
TolgarAuthor Commented:
Question has a verified solution.

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