//writeGG.java  --- you can use this example
import java.io.*;
import java.util.*;
class writeGG {
   PrintStream cout=null;
   BufferedReader cin=null;
   PrintWriter pw = null;
   public static final String fileName="GG.txt";
   public static void main(String xxx[ ]) {
      writeGG gg = new writeGG( );
      gg.prepareIO( );
      gg.main( );
   }
   public writeGG( ) { }
   void prepareIO( ) {
       try{
          cout = System.out;
          cin = new BufferedReader(
               new InputStreamReader(System.in) );
       }catch(Exception e) {;}
   }
////////
   int main( ) {
      int nRec =  5 + (int)(Math.random( )*10.0);
      try {
         pw = new PrintWriter( new FileWriter(fileName));
      }catch(Exception e) { return 0; }
      cout.printf("writting %d records into file: %s", nRec, fileName);
      for(int i=0; i < nRec; ++i) {
          genOneRec(i);
      }//for
      pw.close( );
      cout.println( );
      return 0;
   }//int main(
/////////
   void genOneRec(int i) {
       String ha[ ]={"Chang", "Lee", "Cage"};
       int id =  9917000 + i;
       int n = (int)( ha.length * Math.random( )); // 0..2
       String name = ha[n];
       name += (char)('A' + (int)(26*Math.random( )) );
       name += (char)('A' + (int)(26*Math.random( )) );
       name += (char)('A' + (int)(26*Math.random( )) );
       int gy = 75 + (int)(8*Math.random( ) );
       pw.printf("%8d %10s  %d\n", id, name, gy);
   }//genOneRec(
}//writeGG
/******************
C:\jtest\pone> javac writeGG.java

C:\jtest\pone> java writeGG
writting 14 records into file: GG.txt

C:\jtest\pone> type GG.txt
 9917000   ChangPBI  80
 9917001    CageYJP  79
 9917002    CageNPJ  75
 9917003     LeeYIV  82
 9917004    CageOTU  77
 9917005   ChangLTL  75
 9917006     LeeRCL  79
 9917007     LeeOXK  78
 9917008    CageEER  80
 9917009   ChangGTH  82
 9917010     LeeXGB  82
 9917011    CageQAZ  75
 9917012     LeeQXZ  77
 9917013   ChangASH  77
C:\jtest\pone>
****************************/