ch6_e6_8.java

来自「各种关于JAVA的初级编程」· Java 代码 · 共 24 行

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

public class ch6_e6_8 extends Applet
{
    TextField tf = new TextField();
    int tfLength = 0;
    
    public void init()
    {
        try
        {
            tfLength = Integer.parseInt(getParameter("length"));
            tf.setColumns(tfLength);
            add(tf);
        }
        catch(NumberFormatException nfe)
        {
            tf.setText("HTML文件传入的参数格式错误。");
            add(tf);
        }
    }
}