本文整理汇总了Java中javax.swing.JTextArea.isFocusOwner方法的典型用法代码示例。如果您正苦于以下问题：Java JTextArea.isFocusOwner方法的具体用法？Java JTextArea.isFocusOwner怎么用？Java JTextArea.isFocusOwner使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javax.swing.JTextArea的用法示例。
在下文中一共展示了JTextArea.isFocusOwner方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: start
import javax.swing.JTextArea; //导入方法依赖的package包/类
public void start ()
{
setSize (200,200);
setVisible(true);
validate();
JFrame frame = new JFrame("The Frame");
Set ftk = new HashSet();
ftk.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_DOWN, 0));
frame.getContentPane().
setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
ftk);
JCheckBox checkbox = new JCheckBox("test");
frame.getContentPane().add(checkbox, BorderLayout.NORTH);
JTextArea textarea = new JTextArea(40, 10);
frame.getContentPane().add(textarea);
frame.pack();
frame.setVisible(true);
Util.waitForIdle(robot);
if (!frame.isActive()) {
throw new RuntimeException("Test Fialed: frame isn't active");
}
// verify if checkbox has focus
if (!checkbox.isFocusOwner()) {
checkbox.requestFocusInWindow();
Util.waitForIdle(robot);
if (!checkbox.isFocusOwner()) {
throw new RuntimeException("Test Failed: checkbox doesn't have focus");
}
}
// press VK_DOWN
robot.keyPress(KeyEvent.VK_DOWN);
robot.delay(50);
robot.keyRelease(KeyEvent.VK_DOWN);
robot.delay(50);
Util.waitForIdle(robot);
// verify if text area has focus
if (!textarea.isFocusOwner()) {
throw new RuntimeException("Test Failed: focus wasn't transfered to text area");
}
// press '1'
robot.keyPress(KeyEvent.VK_1);
robot.delay(50);
robot.keyRelease(KeyEvent.VK_1);
robot.delay(50);
Util.waitForIdle(robot);
// verify if KEY_TYPED arrived
if (!"1".equals(textarea.getText())) {
throw new RuntimeException("Test Failed: text area text is \"" + textarea.getText() + "\", not \"1\"");
}
System.out.println("Test Passed");
}