Java Applet 实现双精度浮点数整数部分提取

import java.awt.; import java.applet.;

public class Prog1 extends Applet { Label label = new Label('请输入一个双精度浮点数：'); TextField in = new TextField(18); Label out = new Label('');

public void init() {
    add(label);
    add(in);
    add(out);
}

public boolean action(Event e, Object o) {
    if (e.target == in) {
        double num = Double.valueOf(in.getText());
        int integerPart = (int) num;
        out.setText('其整数部分为：' + integerPart);
        repaint();
    }
    return true;
}

}