java jtextfield 居中 |
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多谢! | 给你一个小例子,刚写的,呵呵:) import javax.swing.*; import java.awt.event.*; import java.awt.*; public class JTextFieldTest extends JFrame { public JTextFieldTest() { super("设置JTextField的文字的位置"); JTextField text = new JTextField("这些文字将居中显示",10); text.setHorizontalAlignment(JTextField.CENTER); getContentPane().add(text,BorderLayout.NORTH); setSize(300,400); show(); } public static void main(String args[]) { JTextFieldTest p = new JTextFieldTest(); p.addWindowListener( new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } } ); } } | JTextField public void setHorizontalAlignment(int alignment) Sets the horizontal alignment of the text. Valid keys are: JTextField.LEFT JTextField.CENTER JTextField.RIGHT JTextField.LEADING JTextField.TRAILING invalidate and repaint are called when the alignment is set, and a PropertyChange event ("horizontalAlignment") is fired. Parameters: alignment - the alignment Throws: IllegalArgumentException - if alignment is not a valid key |
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