onlydigitkeylistener.java

来自「some of the image proceeing samples usin」· Java 代码 · 共 14 行

package frame.listener;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class OnlyDigitKeyListener extends KeyAdapter {
    
    public void keyTyped(KeyEvent e) {
        if (!Character.isDigit(e.getKeyChar())) {
            e.consume();
        }
    }
}