card_num.rar_card num_cardnum

package card.num; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.List; public class Card_Num_Create { public static void main(String args[]) { List list = new ArrayList(); String qihao="1001"; //期号 String xvhao="0"; //序号 String first3="100"; //账号前三位字母 String last7="0"; //账号后七位数字 String pwd="0"; //四位密码 String[] array = new String[]{"0","0","0","0","0"}; String STR_FORMAT_XVHAO = "00000"; String file_path = "E:\\card_num_10001.txt"; //文件路径 int j = 1; //生产10000个卡号 while ( j <= 10000 ){ boolean flag1 = false; boolean flag2 = false; // char c_a=(char) (Math.random ()*26+'A'); // char c_b=(char) (Math.random ()*26+'A'); // char c_c=(char) (Math.random ()*26+'A'); // first3 = String.valueOf(c_a)+String.valueOf(c_b)+String.valueOf(c_c); int a = (int)(Math.random() * 10000000); if(a >= 1000000 && a < 10000000) { last7 = String.valueOf(a); flag1 = true; } int b = (int)(Math.random() * 10000); if(b >= 1000 && b < 10000) { pwd = String.valueOf(b); flag2 = true; } if ( flag1 && flag2 ){ DecimalFormat df = new DecimalFormat(STR_FORMAT_XVHAO); xvhao = df.format(j); array = new String[]{qihao,xvhao,first3,last7,pwd}; list.add(array); j++; } } //输出10000个卡号 write(file_path, list); } public static void write(String path, List list) { String s = new String(); String s1 = new String(); try { File f = new File(path); if (f.exists()) { //System.out.println("文件存在"); } else { System.out.println("文件不存在，正在创建..."); if (f.createNewFile()) { System.out.println("文件创建成功！"); } else { System.out.println("文件创建失败！"); } } BufferedWriter output = new BufferedWriter(new FileWriter(f)); for ( int i=0; i<list.size();i++){ String[] tmp = (String[])list.get(i); String qihao = (String)tmp[0]; String xvhao = (String)tmp[1]; String first3 = (String)tmp[2]; String last7 = (String)tmp[3]; String pwd = (String)tmp[4]; String line_content = qihao+xvhao+","+first3+last7+","+pwd+"\n"; output.write(line_content); } output.close(); } catch (Exception e) { e.printStackTrace(); } } }