typetrainapplet1.java~1~

来自「applet java 的编程程序」· JAVA~1~ 代码 · 共 122 行

package chapter11;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;

public class TypeTrainApplet1
    extends JApplet
{
    boolean isStandalone = false;
    BorderLayout borderLayout1 = new BorderLayout();
    int stepLen;
    int stepInterval;
    int columnCount;
    int generateInterval;

    //Get a parameter value
    public String getParameter(String key, String def)
    {
        return isStandalone ? System.getProperty(key, def) :
            (getParameter(key) != null ? getParameter(key) : def);
    }

    //Construct the applet
    public TypeTrainApplet1()
    {
    }

    //Initialize the applet
    public void init()
    {
        try
        {
            stepLen = Integer.parseInt(this.getParameter("stepLen", "2"));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        try
        {
            stepInterval = Integer.parseInt(this.getParameter("stepInterval",
                "50"));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        try
        {
            columnCount = Integer.parseInt(this.getParameter("columnCount",
                "10"));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        try
        {
            generateInterval = Integer.parseInt(this.getParameter(
                "generateInterval", "500"));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        try
        {
            jbInit();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    //Component initialization
    private void jbInit()
        throws Exception
    {
        this.setSize(new Dimension(400, 300));
        this.getContentPane().setLayout(borderLayout1);
    }

    //Get Applet information
    public String getAppletInfo()
    {
        return "Applet Information";
    }

    //Get parameter info
    public String[][] getParameterInfo()
    {
        java.lang.String[][] pinfo =
            {
            {
            "stepLen", "int", "步长"},
            {
            "stepInterval", "int", "间隔"},
            {
            "columnCount", "int", "栏数"},
            {
            "generateInterval", "int", "间隔"},
        };
        return pinfo;
    }

    //static initializer for setting look & feel
    static
    {
        try
        {
            //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            //UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
        }
        catch (Exception e)
        {
        }
    }
}