threadtest.java

一个java swt的线程例子 用滚动的进度条显示线程 直观 对初学者有点用处.

import java.util.Random;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Scale;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Spinner;


public class threadtest{
	 public threadtest thisme=this ;
	private Spinner spinner_1;
	private Scale scale;
	ProgressBar progressBar;
	private Button button;
	private Button button_1;
	private Button button_2;
	Button button_3;
	private Button button_4;
	private Button button_5;
	private Button button_6;
	private Button button_7;
	private Group group;
	Spinner spinner;
	private Mythread mythread;
	protected Shell shell;
	/**
	 * Launch the application
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			threadtest window = new threadtest();
			window.open();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * Open the window
	 */
	public void open() {
		final Display display = Display.getDefault();
		createContents();
		shell.open();
		shell.layout();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
	}

	/**
	 * Create contents of the window
	 */
	protected void createContents() {
		shell = new Shell();
		shell.setLayout(new GridLayout());
		shell.setSize(500, 375);
		shell.setText("SWT Application");
		//
		oo(shell);
	}

	void oo(Shell shell2) {
		// TODO 自动生成方法存根
		group = new Group(shell2, SWT.NONE);
		group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
//		group = new Group(shell, SWT.NONE);
		final GridLayout gridLayout = new GridLayout();
		gridLayout.numColumns = 8;
		group.setLayout(gridLayout);
		group.setText("线程一");
		button = new Button(group, SWT.NONE);
		button.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
//				System.out.println(spinner_1);
				mythread = new Mythread(thisme);
				mythread.start();
				button.setEnabled(!button.getEnabled());
				button_2.setEnabled(!button_2.getEnabled());
			}
		});
		button.setText("启动");

		button_2 = new Button(group, SWT.NONE);
		button_2.setEnabled(false);
		button_2.setText("停止");
		button_2.addSelectionListener(new SelectionAdapter() {
			@SuppressWarnings("deprecation")
			public void widgetSelected(SelectionEvent arg0) {
				mythread.stop();
				button.setEnabled(!button.getEnabled());
				button_2.setEnabled(!button_2.getEnabled());
			}
		});

		button_1 = new Button(group, SWT.NONE);
		button_1.setEnabled(false);
		button_1.setText("暂停");

		button_4 = new Button(group, SWT.NONE);
		button_4.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
				mythread.sleeptime=spinner_1.getSelection();
				mythread.sleeptrue=true;
				System.out.println(spinner_1.getSelection());
			}
		});
		button_4.setText("睡眠");

		button_5 = new Button(group, SWT.NONE);
		button_5.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
				mythread.suspend();
			}
		});
		button_5.setText("挂起");

		button_6 = new Button(group, SWT.NONE);
		button_6.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
				mythread.resume();
			}
		});
		button_6.setText("恢复");

		spinner = new Spinner(group, SWT.BORDER);

		button_3 = new Button(group, SWT.TOGGLE);
		button_3.setSelection(true);
		button_3.setText("随机速度");

		progressBar = new ProgressBar(group, SWT.NONE);
		progressBar.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 8, 1));

		new Label(group, SWT.NONE).setText("休眠");

		spinner_1 = new Spinner(group, SWT.BORDER);
		spinner_1.setMaximum(10000);
		spinner_1.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
				scale.setSelection(spinner_1.getSelection());
			}
		});

		new Label(group, SWT.NONE).setText("毫秒");

		scale = new Scale(group, SWT.NONE);
		scale.setRedraw(true);
		scale.setPageIncrement(1000);
		scale.setIncrement(1000);
		scale.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent arg0) {
				spinner_1.setSelection(scale.getSelection());
			}
		});
		scale.setMaximum(10000);
		scale.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 5, 1));

	}

	public void sd(int ss) {
		mythread.sd=spinner.getSelection();
		progressBar.setSelection(ss++);
	}

	public void sd() {
		if(button_3.getSelection()){
			spinner.setSelection((int) (new Random().nextDouble()*100));
		}
	}

}