import java.io.*;
//Testing tank
public class testOverflow {
  public static void main(String[] argn) {
    try {
      Tank t = new Tank();
      System.out.println("tank content = "+t.content());
      t.add(5001.0);
      System.out.println("Overflow Exception not handled");
    }
	catch (IllegalArgumentException e) {
		System.err.println("Can't add/remove negative amounts");
	}
	catch (Tank.TankOverFlowException e) {
		System.err.println("Tank overflow by "+e.overflow+" its original content was "+e.overflowTank.content());
	}
  }
}