import java.io.*;

public class test_1 {
  static String s = "hello world... test_1";
  public static void main(String [] args){
    System.out.println(s);
    test_1 t = new test_1();
    t.foo(10);
  }

  void foo(int n){
    int i;
    for(i = 0; i < n; i++)
      System.out.println("i="+i);
  }
}