如何让java小程序自身重复_Java

如何让java小程序自身重复

java

如何让java小程序自身重复,java,Java,我有一个java图形实验室，它运行一个小程序，用鼠标点击7张不同的“幻灯片”。在第七张幻灯片之后，我需要了解如何从第一张幻灯片重新运行整个小程序。我认为这与While循环或重绘方法有关，但我不确定

我有一个java图形实验室，它运行一个小程序，用鼠标点击7张不同的“幻灯片”。在第七张幻灯片之后，我需要了解如何从第一张幻灯片重新运行整个小程序。我认为这与While循环或重绘方法有关，但我不确定这是我的代码，以更好的

// Nicholas Barrera
// May 15, 2017
//GraphicsLab09st.java
// This is the student, starting file for Graphics Lab 08.
// This file is identical to Java1520.java.
// This slide show is about Mr. Leon Schram.
// Each student needs to alter this presentation, 
// add pictures, add pages, add graphics and make it about him/herself.


import java.awt.*;


public class GraphicsLab09st extends java.applet.Applet
{

    int numClicks;
    Image picture1, picture2, picture3, picture4, picture5, picture6, picture7, picture8, picture9, picture10, picture11, picture12, picture13;

    public void init()
    {
        numClicks = 0;
        picture1 = getImage(getDocumentBase(),"RegularShowSunglasses.jpg"); 
        picture2 = getImage(getDocumentBase(),"film-production.jpg");   
        picture3 = getImage(getDocumentBase(),"los-angeles.jpg");               
        picture4 = getImage(getDocumentBase(),"SanAntonio.jpg");    
        picture5 = getImage(getDocumentBase(),"Brandeis.jpg");
        picture6 = getImage(getDocumentBase(),"sound-cloud.png");
        picture7 = getImage(getDocumentBase(),"studio.jpg");
        picture8 = getImage(getDocumentBase(),"StrangerThings.jpg");
        picture9 = getImage(getDocumentBase(),"MazeRunnerBooks.jpg");   
        picture10 = getImage(getDocumentBase(),"rubiks.jpg");       
        picture11 = getImage(getDocumentBase(),"CaliLongboarding.jpg"); 
        picture12 = getImage(getDocumentBase(),"Productive.jpg");   
        picture13 = getImage(getDocumentBase(),"Netflix_Logo.jpg");                                         
    }                                           


    public void paint(Graphics g)
    {
        switch (numClicks)
        {
            case 0: page1(g); break;
            case 1: page2(g); break;
            case 2: page3(g); break;
            case 3: page4(g); break;
            case 4: page5(g); break;
            case 5: page6(g); break;
            case 6: page7(g); break;

        }   
    }

    public boolean mouseDown(Event e, int x, int y)
    {
        numClicks++;
        repaint();
        return true;
    }

    //SLIDE 1
    public void page1(Graphics g)
    {
        Expo.setColor(g,Expo.cyan);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("Arial",Font.BOLD,95));
        g.drawString("About Me",218,100);
        g.setFont(new Font("Arial",Font.BOLD,50));
        g.drawString("Nick Barrera",50,275);
        Expo.setColor(g,Expo.red);
        Expo.fillStar(g,510,350,175,8);
        Expo.setColor(g,Expo.yellow);
        Expo.drawThickStar(g,510,350,225,8,25);
        Expo.setColor(g,Expo.blue);
        Expo.drawThickStar(g,510,350,275,8,25);
        g.drawImage(picture1,400,250,this);
        g.setFont(new Font("Times Roman",Font.PLAIN,20)); 
        g.drawString("My name is",50,200);      
        g.drawString("Click once to continue.",750,580);    
    }



    //SLIDE 2
    public void page2(Graphics g)
    {
        Expo.setColor(g,Expo.gold);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("Algerian",Font.BOLD,100));
        g.drawString("PAGE 2",200,100);
        Expo.setColor(g,Expo.blue);
        Expo.fillRectangle(g,100,250,940,500);
        Expo.setColor(g,Expo.chartreuse);
    //  Expo.drawThickOval(g,260,375,100,150,20);
        Expo.drawThickRectangle(g,15,205,590,590,20);
        g.drawImage(picture3,25,215,this);
        g.drawImage(picture4,615,280,this);
        Expo.setColor(g,Expo.blue);
        g.setFont(new Font("Times Roman",Font.PLAIN,20)); 
        g.drawString("I was born in the Los Angeles, CA and moved to San Antonio, TX in 2005.",100,190); 
        g.drawString("Click once to continue.",750,580);    
    }



    //SLIDE 3
    public void page3(Graphics g)
    {
        Expo.setColor(g,Expo.magenta);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("Impact",Font.BOLD,100));
        g.drawString("PAGE 3",200,100);
        Expo.setColor(g,Expo.darkBlue);
        Expo.fillRoundedRectangle(g,460,220,960,580,50);
        Expo.drawRandomBurst(g,268,394,185,2500);
        g.drawImage(picture5,150,285,this);
        g.drawImage(picture2,520,240,this);
        g.setFont(new Font("Times Roman",Font.PLAIN,20)); 
        g.drawString("I am a juinior at Brandeis high school and intested in studying film production in college",100,150);
        g.drawString("and becoming a Hollywood Producer/Music Artist in Los Angles, California is my dream.",100,175);   
        g.drawString("Click once to continue.",750,600);
    }



    //SLIDE 4
    public void page4(Graphics g)
    {
        Expo.setColor(g,Expo.darkGreen);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("SansSeriff",Font.BOLD,100));
        g.drawString("PAGE 4",200,100);
        g.drawImage(picture6,40,200,this);
        g.drawImage(picture7, 500,200,this);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("Times Roman",Font.PLAIN,20)); 
        g.drawString("The studio I recorded at is called The Living Room Studios.",420,530);
        g.drawString("My group name is The Infinity Collective or ICE.",50,480);    
        g.drawString("I also hope to do something in music and I actually have recorded two songs and",75,150); 
        g.drawString("have them on soundcloud, a database that shares many artist's music.",75,175);
        Expo.setColor(g,Expo.blue);
        g.drawString("Click once to continue.",750,580);    
    }



    //SLIDE 5
    public void page5(Graphics g)
    {
        Expo.setColor(g,Expo.black);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.red);
        g.setFont(new Font("Garamond",Font.BOLD,100));
        g.drawString("PAGE 5",200,100);
        g.drawImage(picture8,40,200,this);
        g.drawImage(picture9, 500,200,this);
        Expo.setColor(g,Expo.red);
        g.setFont(new Font("Times Roman",Font.PLAIN,20));
        g.drawString("The Maze Runner series by James Dashner is by far my favorite.",320,530);
        g.drawString("My hobbies are reading books, playing basketball, and watching movies.",75,150);
         Expo.setColor(g,Expo.blue);
        g.drawString("Click once to continue.",750,580); 
    }   



    //SLIDE 6
    public void page6(Graphics g)
    {
        Expo.setColor(g,Expo.tan);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("Algerian",Font.BOLD,100));
        g.drawString("PAGE 6",200,100);
        g.setFont(new Font("Times Roman",Font.PLAIN,20));
        g.drawString("My other interest are playing video games, skating and challenging my mind to think with puzzles.",55,150);
        g.drawImage(picture10,75,200,this);
        g.drawString("I can solve a Rubik's cube in under 2 minutes.",45,500);
        g.drawString("I love longboarding more than doing actual skate tricks.",500,520);
        g.drawImage(picture11,470,200,this);
        Expo.setColor(g,Expo.blue);
        g.setFont(new Font("Times Roman",Font.PLAIN,20));
        g.drawString("Click once to continue.",750,580); 
    }   



    //SLIDE 7   
    public void page7(Graphics g)
    {
        Expo.setColor(g,Expo.lightBlue);
        g.fillRect(0,0,1000,650);
        Expo.setColor(g,Expo.black);
        g.setFont(new Font("Bold",Font.BOLD,100));
        g.drawString("PAGE 7",200,100);
        g.setFont(new Font("Times Roman",Font.PLAIN,20));
        g.drawString("Overall I'm a well organized, sporty, and very productive student, who loves fun hobbies and learning new skills",35,150);
        g.drawString("",35,165);
        g.drawImage(picture12,570,185,this);
        g.drawImage(picture13,50,185,this);
        Expo.setColor(g,Expo.blue);
        g.setFont(new Font("Times Roman",Font.PLAIN,20));
        g.drawString("Click once to continue.",750,600); 
    }   
}

如果您只是想返回到第一张幻灯片，您所需要的只是当大于幻灯片数量时，将

numClicks

重置为

例如：

public boolean mouseDown(Event e, int x, int y)
{
    numClicks++;
    repaint();
    if (numClicks == 6) {
        numClicks = 0;
    }
    return true;
}

这也许不是最好的方法，但它应该可以完成工作。

如果您只是想返回到第一张幻灯片，那么您所需要的只是在大于幻灯片数量时将

numClicks

重置为

例如：

public boolean mouseDown(Event e, int x, int y)
{
    numClicks++;
    repaint();
    if (numClicks == 6) {
        numClicks = 0;
    }
    return true;
}

这也许不是最好的方法，但应该可以完成工作。

有两个简单的解决方案：

如前所述：只需重置您的点击计数器
您可以使用模运算来确定：计数器是1、2、3、4、5或6的倍数，依此类推，而不是执行
```
开关（numClicks）
```
。如果是6的倍数，则调用
```
page7（）
```
。。。等等

但是：通常情况下，这里真正的问题是：UI示例不是学习Java的好方法。你看，你缺乏Java的基本技能

示例：您正在到处复制代码。您的7 page（）方法几乎相同。您不应该担心如何增强代码，而应该担心如何简化代码。确定共同模式；并将其转化为具体的方法。因此，当您想将Times字体增加1时，只更新1个方法，而不是7个

有两个简单的解决方案：

如前所述：只需重置您的点击计数器
您可以使用模运算来确定：计数器是1、2、3、4、5或6的倍数，依此类推，而不是执行
```
开关（numClicks）
```
。如果是6的倍数，则调用
```
page7（）
```
。。。等等

但是：通常情况下，这里真正的问题是：UI示例不是学习Java的好方法。你看，你缺乏Java的基本技能

您想重新启动小程序还是回到第一张幻灯片？请理解：java小程序是过时的技术。使用applet学习javaui编程会浪费您的时间（在一定程度上）。我完全同意，但这看起来像是家庭作业。不幸的是，他可能别无选择。但核心问题是：每一个被要求使用applet的学生都应该被告知：告诉你的老师他们在浪费你的时间！您想重新启动小程序还是回到第一张幻灯片？请理解：java小程序是过时的技术。使用applet学习javaui编程会浪费您的时间（在一定程度上）。我完全同意，但这看起来像是家庭作业。不幸的是，他可能别无选择。但核心问题是：每一个被要求使用applet的学生都应该被告知：告诉你的老师他们在浪费你的时间！