SWT测试模板+同步异步Demo

来源：互联网发布：推广淘宝联盟怎么转码编辑：程序博客网时间：2024/04/29 23:53
package test.run;import org.eclipse.swt.SWT;import org.eclipse.swt.events.SelectionAdapter;import org.eclipse.swt.events.SelectionEvent;import org.eclipse.swt.widgets.Button;import org.eclipse.swt.widgets.Display;import org.eclipse.swt.widgets.Label;import org.eclipse.swt.widgets.Shell;import org.eclipse.swt.widgets.Text;public class TestTemplate {public static void main(final String[] args) {final Display display = new Display();final Shell shell = new Shell(display);shell.setText("SWT测试模板");shell.setBounds(800, 100, 400, 300);shell.open();final Label lblTest = new Label(shell, SWT.NONE);lblTest.setText("测试结果：");lblTest.setBounds(10, 10, 60, 20);final Text txtTest = new Text(shell, SWT.NONE | SWT.BORDER);txtTest.setBounds(70, 10, 80, 20);txtTest.setText("没点击按钮");final Button btnTest = new Button(shell, SWT.NONE);btnTest.setText("测试");btnTest.setBounds(160, 10, 40, 20);btnTest.addSelectionListener(new SelectionAdapter() {@Overridepublic void widgetSelected(final SelectionEvent e) {txtTest.setText("点击了按钮");printTime();// 同步是防止一个数据被两人同时用，造成数据的破坏，异步是为了加快程序的运行。// testAsyncExec();testSyncExec();}});while (!shell.isDisposed()) {if (!display.readAndDispatch()) {display.sleep();}}display.dispose();}/** * 异步asyncExec(同时访问一个资源，提高效率) */protected static void testAsyncExec() {System.out.println("这里不会因为asyncExec而阻塞，同时进行，就是异步");Display.getCurrent().asyncExec(new Runnable() {@Overridepublic void run() {try {System.out.println("开始倒计时10秒了");Thread.sleep(10000);// 倒计时10秒} catch (final InterruptedException e1) {}System.out.println("倒计时10秒完成了");}});new Thread(new Runnable() {@Overridepublic void run() {try {System.out.println("开始循环5秒");Thread.sleep(5000);// 循环5秒System.out.println("循环5秒停止");} catch (final InterruptedException e) {}}}).start();}/** * 同步syncExec(等待一个线程结束后才开始另一个，保护数据，防止脏读) */protected static void testSyncExec() {System.out.println("这里因为syncExec阻塞，要等到倒计时完成之后才会运行，就是同步");Display.getCurrent().syncExec(new Runnable() {@Overridepublic void run() {try {System.out.println("开始倒计时10秒了");Thread.sleep(10000);// 倒计时10秒} catch (final InterruptedException e1) {}System.out.println("倒计时10秒完成了");}});new Thread(new Runnable() {@Overridepublic void run() {try {System.out.println("开始循环5秒");Thread.sleep(5000);// 循环5秒System.out.println("循环5秒停止");} catch (final InterruptedException e) {}}}).start();}/** * 用于计时 */protected static void printTime() {new Thread(new Runnable() {@Overridepublic void run() {int i = 0;while (i < 16) {i++;try {Thread.sleep(1000);System.out.println(i + "秒");} catch (final InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}).start();}}
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