如何循环8 * 1 svg图像（由java生成）以获得8 * 8 svg图像？

Question

import java.util.Random; 

class svg{ 
    public static void main(String[] args){ 
     String f="\""; //use f to stand for \" in order to avoid confusing when writing svg codes. 
     System.out.format("<?xml version=%s1.0%s standalone=%sno%s?>\n", f,f,f,f); 
     System.out.format("<!DOCTYPE svg PUBLIC %s-//W3C//DTD SVG 1.1//EN%s\n%shttp://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd%s>\n",f,f,f,f); 
     System.out.format("<svg height=%s800%s width=%s800%s xmlns=%shttp://www.w3.org/2000/svg%s version=%s1.1%s>\n",f,f,f,f,f,f,f,f); 
     verticleAliens(); 
     System.out.println("</svg>"); 
    } 



    public static void verticleAliens(){ 
     String f="\""; 
     for(int i=0; i<=800; i+=100){ 
      String randomColor1 = color(); 
      String randomColor2 = color(); 
      String randomColor3 = color(); 
      String randomColor4 = color(); 
      String randomColor5 = color(); 
      String randomColor6 = color(); 
      String randomColor7 = color(); 

      System.out.format("<circle cx=%s50%s cy=%s%d%s r=%s20%s stroke=%s"+randomColor1+"%s stroke-width=%s3%s fill=%s"+randomColor2+"%s />\n", f,f,f,60+i,f,f,f,f,f,f,f,f,f); 
      System.out.format("<line x1=%s50%s y1=%s%d%s x2=%s50%s y2=%s%d%s stroke=%s"+randomColor3+"%s stroke-width=%s5%s />\n", f,f,f,50+i,f,f,f,f,30+i,f,f,f,f,f); 
      System.out.format("<line x1=%s40%s y1=%s%d%s x2=%s20%s y2=%s%d%s stroke=%s"+randomColor4+"%s stroke-width=%s3%s />\n", f,f,f,60+i,f,f,f,f,50+i,f,f,f,f,f); 
      System.out.format("<circle cx=%s36%s cy=%s%d%s r=%s3%s fill=%s"+randomColor5+"%s />\n", f,f,f,15+i,f,f,f,f,f); 
      System.out.format("<rect x=%s40%s y=%s%d%s width=%s20%s height=%s20%s style=%sfill:"+randomColor6+";stroke-width:3;stroke:"+randomColor7+"%s/>\n\n",f,f,f,10+i,f,f,f,f,f,f,f); 
     } 
    } 

    public static String color(){ 
     Random randomGenerator = new Random(); 
     int r = randomGenerator.nextInt(256); 
     int g = randomGenerator.nextInt(256); 
     int b = randomGenerator.nextInt(256); 
     return String.format("#%02x%02x%02x",r,g,b); 
    } 
} 

这些Java代码可以生成具有连续8个不同的“外星人”一个SVG图像，这里是图像：

就可以了，这个SVG图片有8 * 1不同外星人。但我想获得一个8 * 8的外星人svg图像（外星人应该有水平相同的颜色模式）。我如何编写循环来实现（或者，我怎样才能修改我的for循环）？谢谢！

注意：如果你想尝试在您的计算机上这些代码，你可以使用java svg>aliens.svg生成一个SVG文件，该文件名

aliens.svg

编译程序后。然后在浏览器中打开它。

Answer 1

@Manuel_Jain给了我一个非常有用的建议，我可以编写两个嵌套循环来解决我的问题。以下是更新后的代码：

import java.util.Random; 

class svg{ 
    public static void main(String[] args){ 
     //use slashQuote to stand for \" in order to avoid confusing when modifying svg codes. 
     String slashQuote="\""; 
     System.out.format("<?xml version=%s1.0%s standalone=%sno%s?>\n", 
      slashQuote,slashQuote,slashQuote,slashQuote); 
     System.out.format("<!DOCTYPE svg PUBLIC %s-//W3C//DTD SVG 1.1//EN%s\n%shttp://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd%s>\n", 
      slashQuote,slashQuote,slashQuote,slashQuote); 
     System.out.format("<svg height=%s800%s width=%s800%s xmlns=%shttp://www.w3.org/2000/svg%s version=%s1.1%s>\n", 
      slashQuote,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote); 
     aliens(); 
     System.out.println("</svg>"); 
    } 


    //Most of works were done in this function. It prints all aliens. 
    public static void aliens(){ 
     //use slashQuote to stand for \" in order to avoid confusing when modifying svg codes. 
     String slashQuote="\""; 

     //This loop generates different aliens (because of randomColor) verticlely. It is looping 1*8 aliens to get 8*8 aliens. 
     for(int i=0; i<=800; i+=100){ 

      //get 7 colors by calling color() function for 7 times. The number is 7 because there will be 7 different color in one alien. 
      String randomColor1 = color(); 
      String randomColor2 = color(); 
      String randomColor3 = color(); 
      String randomColor4 = color(); 
      String randomColor5 = color(); 
      String randomColor6 = color(); 
      String randomColor7 = color(); 

      //This loop generates identicle aliens horizontaly. It is looping a 1*1 alien to get 1*8 aliens. 
      //It will not affected by "String randomColorN = color();" because I only defined colors in outer loop. 
      for(int j=0;j<=800;j+=100){ 
       //Here is my alien!!!!!!!!!!!!!!!!!!!!! 
       System.out.format("<ellipse cx=%s%d%s cy=%s%d%s rx=%s10%s ry=%s30%s stroke=%s"+randomColor1+ 
        "%s stroke-width=%s3%s fill=%s"+randomColor2+"%s />\n", 
        slashQuote,50+j,slashQuote,slashQuote,60+i,slashQuote,slashQuote,slashQuote,slashQuote, 
        slashQuote,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote); 

       System.out.format("<line x1=%s%d%s y1=%s%d%s x2=%s%d%s y2=%s%d%s stroke=%s"+randomColor3+ 
        "%s stroke-width=%s5%s />\n", 
        slashQuote,50+j,slashQuote,slashQuote,50+i,slashQuote,slashQuote,50+j,slashQuote, 
        slashQuote,30+i,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote); 

       System.out.format("<line x1=%s%d%s y1=%s%d%s x2=%s%d%s y2=%s%d%s stroke=%s"+randomColor4+ 
        "%s stroke-width=%s3%s />\n", 
        slashQuote,40+j,slashQuote,slashQuote,60+i,slashQuote,slashQuote,20+j,slashQuote, 
        slashQuote,50+i,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote); 
       System.out.format("<circle cx=%s%d%s cy=%s%d%s r=%s3%s fill=%s"+randomColor5+"%s />\n", 
        slashQuote,36+j,slashQuote,slashQuote,15+i,slashQuote,slashQuote,slashQuote,slashQuote,slashQuote); 
       System.out.format("<rect x=%s%d%s y=%s%d%s width=%s20%s height=%s20%s style=%sfill:"+randomColor6+ 
        ";stroke-width:3;stroke:"+randomColor7+"%s/>\n\n", 
        slashQuote,40+j,slashQuote,slashQuote,10+i,slashQuote,slashQuote,slashQuote,slashQuote, 
        slashQuote,slashQuote,slashQuote); 
      } 
     } 
    } 

    //Generate a random number. 
    public static String color(){ 
     Random randomGenerator = new Random(); 
     int r = randomGenerator.nextInt(256); 
     int g = randomGenerator.nextInt(256); 
     int b = randomGenerator.nextInt(256); 
     /*#%02x%02x%02x converts the RGB color to the hexadecimal value. I tried to use RGB color at first 
     but it doesn't work in svg. Then I found this method in stack overflow. Here is the link: 
     http://stackoverflow.com/questions/3607858/how-to-convert-a-rgb-color-value-to-an-hexadecimal-value-in-java*/ 
     return String.format("#%02x%02x%02x",r,g,b); 
    } 
} 

BTW，这里是新的SVG图片：

谢谢@Manuel_Jain！