Problems compiling

giggsy664 · 21-03-2011 10:06pm #1

Hey guys.

I'm trying to recompile some code I wrote a few weeks ago for an assessment, however it's not letting me compile. I'm running JDK 6u24.

auto.java

public class auto extends Robot
{
      public auto()   
	  {
           super(); 
	  }
	  
	  
	  public auto(String colour) 
	  {
	      super(colour);
	  }

	  void turnRight()
      {
          turnLeft();
          turnLeft();
          turnLeft();  
      }

	  void turn_180_degrees()
      { 
	        turnLeft();
		turnLeft();
      }

      void moveNumOfTimes(int x)
      {
                 
	      int i = 1;	 
		  System.out.println("before the while loop, the value of x = "+x+" and the value of i = "+i);

          while (i <= x)
	      {
		      System.out.println("inside the while loop, the value of x = "+x+" and the value of i = "+i);
	          move();
              i = i + 1;
          }   
      }   

      void pickUpAllBeepers()
      {
            
             while ( beeperPresent() )
             {
                  pickBeeper();
				
             } 
      }

   

     void putAllBeepers()
     {
      
         while ( hasBeeper() )
         {
             putBeeper();
         }
     }

 
     int getNumOfBeepers()
	 {
	         int num_of_beepers = 0;
 	         int i = 0;

            while(beeperPresent())
            {
                   System.out.println("the value of num_of_beepers is "+num_of_beepers);       
                   pickBeeper();
                   num_of_beepers = num_of_beepers + 1;
            }
			int y = num_of_beepers; 
			while ( y > 0  )
            {
                 putBeeper();
				 y = y -1;
           }
		   return num_of_beepers;

   
    }

}

And this is the problem's I get when trying to javac compile

auto.java:1: cannot find symbol
symbol: class Robot
public class auto extends Robot
                          ^
auto.java:16: cannot find symbol
symbol  : method turnLeft()
location: class auto
          turnLeft();
          ^
auto.java:17: cannot find symbol
symbol  : method turnLeft()
location: class auto
          turnLeft();
          ^
auto.java:18: cannot find symbol
symbol  : method turnLeft()
location: class auto
          turnLeft();
          ^
auto.java:23: cannot find symbol
symbol  : method turnLeft()
location: class auto
                turnLeft();
                ^
auto.java:24: cannot find symbol
symbol  : method turnLeft()
location: class auto
                turnLeft();
                ^
auto.java:36: cannot find symbol
symbol  : method move()
location: class auto
                  move();
                  ^
auto.java:44: cannot find symbol
symbol  : method beeperPresent()
location: class auto
             while ( beeperPresent() )
                     ^
auto.java:46: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                  pickBeeper();
                  ^
auto.java:56: cannot find symbol
symbol  : method hasBeeper()
location: class auto
         while ( hasBeeper() )
                 ^
auto.java:58: cannot find symbol
symbol  : method putBeeper()
location: class auto
             putBeeper();
             ^
auto.java:68: cannot find symbol
symbol  : method beeperPresent()
location: class auto
            while(beeperPresent())
                  ^
auto.java:71: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                   pickBeeper();
                   ^
auto.java:77: cannot find symbol
symbol  : method putBeeper()
location: class auto
                 putBeeper();
                 ^
14 errors

I also have another file for compiling that has a robot based on this file

comp.java

public class comp 
{
   public static void main(String [] args)
	{     

      World yard = new World();

	  yard.addWall(1, 0, 14, "east");
	  yard.addWall(1, 1, 7, "east");
	  yard.addWall(10, 1, 5, "east");
	  yard.addWall(10, 3, 5, "east");
	  yard.addWall(10, 5, 5, "east");
      yard.addWall(3, 3, 5, "east");
	  yard.addWall(3, 4, 5, "east");
	  yard.addWall(1, 2, 9, "north");
	  yard.addWall(3, 5, 8, "north");
	  yard.addWall(4, 5, 8, "north");
	  yard.addWall(5, 5, 8, "north");
      yard.addWall(0, 12, 3, "east");
	  yard.addBlock(0, 13);
      yard.addWall(0, 14, 15, "east");
	  yard.addWall(8, 13, 7, "south");
	  yard.addWall(14, 13, 8, "south");

      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);
      yard.addBeeper(13, 6);

      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);
      yard.addBeeper(9, 6);

      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);
      yard.addBeeper(13, 9);

      yard.addBeeper(9, 9);
      yard.addBeeper(9, 9);
      yard.addBeeper(9, 9);
      yard.addBeeper(9, 9);
      yard.addBeeper(9, 9);

      yard.addBeeper(13, 13);
      yard.addBeeper(13, 13);
      yard.addBeeper(13, 13);
      yard.addBeeper(13, 13);
      yard.addBeeper(13, 13);
      yard.addBeeper(13, 13);

      yard.addBeeper(9, 13);
      yard.addBeeper(9, 13);
      yard.addBeeper(9, 13);
      yard.addBeeper(9, 13);

      auto derpy = new auto();

      yard.add(derpy);

      derpy.turnLeft();
	  derpy.moveNumOfTimes(11);
	  derpy.turnRight();
	  derpy.moveNumOfTimes(2);
	  derpy.turnRight();
	  derpy.moveNumOfTimes(9);
	  derpy.turnLeft();
	  derpy.moveNumOfTimes(7);
	  derpy.turnLeft();
	  derpy.moveNumOfTimes(4);
      derpy.getNumOfBeepers();
	  
	  int num_of_beepers = derpy.getNumOfBeepers();
		  
      int one = num_of_beepers;
 
      int two = 2;

      System.out.println("x is = " + num_of_beepers);
      System.out.println("two is = " + two);

      int result = one / two;
      System.out.print("the result of "+num_of_beepers+" divided by 2 is " + result);
         
      int remainder = one % two;
      System.out.println(" with a remainder of "+remainder);
      
      if (remainder == 0)
      {
      System.out.println("the number is even");
      }
      else
	  { 
      System.out.println("the number is odd");
	  }

	   if ( num_of_beepers == 10 )
	  {
		 
	          System.out.println("1) the number of beepers is  "+num_of_beepers);
              derpy.pickUpAllBeepers();
	  }

	  	   if ( num_of_beepers < 10 )
	  {
		 
	          System.out.println("2) the number of beepers is less than 10 and odd");
              derpy.pickBeeper();
			  	   if ( remainder == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }

	   if ( num_of_beepers > 10)
	  {
		 
	          System.out.println("3) the number of beepers is more than 10 and odd");
              derpy.pickBeeper();
			  derpy.pickBeeper();
			  derpy.pickBeeper();
			  	   if ( remainder == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }



	  derpy.moveNumOfTimes(3);

	  int num_of_beepers2 = derpy.getNumOfBeepers();
		  
      int three = num_of_beepers2;
 
      int four = 2;

      System.out.println("x is = " + num_of_beepers2);
      System.out.println("two is = " + two);

      int result2 = three / four;
      System.out.print("the result of "+num_of_beepers2+" divided by 2 is " + result2);
         
      int remainder2 = three % four;
      System.out.println(" with a remainder of "+remainder2);
      
      if (remainder2 == 0)
      {
      System.out.println("the number is even");
      }
      else
	  { 
      System.out.println("the number is odd");
	  }

	   if ( num_of_beepers2 == 10 )
	  {
		 
	          System.out.println("1) the number of beepers is  10");
              derpy.pickUpAllBeepers();
	  }

	  	   if ( num_of_beepers2 < 10 )
	  {
		 
	          System.out.println("2) the number of beepers is less than 10 and odd");
              derpy.pickBeeper();
			  	   if ( remainder2 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }

	   if ( num_of_beepers2 > 10)
	  {
		 
	          System.out.println("3) the number of beepers is more than 10 and odd");
              derpy.pickBeeper();
			  derpy.pickBeeper();
			  derpy.pickBeeper();
			  	   if ( remainder2 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }



	  derpy.moveNumOfTimes(4);


	  int num_of_beepers3 = derpy.getNumOfBeepers();
		  
      int five = num_of_beepers3;
 
      int six = 2;

      System.out.println("x is = " + num_of_beepers3);
      System.out.println("two is = " + two);

      int result3 = five / six;
      System.out.print("the result of "+num_of_beepers3+" divided by 2 is " + result3);
         
      int remainder3 = five % six;
      System.out.println(" with a remainder of "+remainder3);
      
      if (remainder3 == 0)
      {
      System.out.println("the number is even");
      }
      else
	  { 
      System.out.println("the number is odd");
	  }

	   if ( num_of_beepers3 == 10 )
	  {
		 
	          System.out.println("1) the number of beepers is  10");
              derpy.pickUpAllBeepers();
	  }

	  	   if ( num_of_beepers3 < 10 )
	  {
		 
	          System.out.println("2) the number of beepers is less than 10 and odd");
              derpy.pickBeeper();
			  	   if ( remainder3 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }

	   if ( num_of_beepers3 > 10)
	  {
		 
	          System.out.println("3) the number of beepers is more than 10 and odd");
              derpy.pickBeeper();
			  derpy.pickBeeper();
			  derpy.pickBeeper();
			  	   if ( remainder3 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }



      derpy.turnRight();
	  derpy.moveNumOfTimes(4);

	  int num_of_beepers4 = derpy.getNumOfBeepers();
		  
      int seven = num_of_beepers4;
 
      int eight = 2;

      System.out.println("x is = " + num_of_beepers4);
      System.out.println("two is = " + two);

      int result4 = seven / eight;
      System.out.print("the result of "+num_of_beepers4+" divided by 2 is " + result4);
         
      int remainder4 = seven % eight;
      System.out.println(" with a remainder of "+remainder3);
      
      if (remainder4 == 0)
      {
      System.out.println("the number is even");
      }
      else
	  { 
      System.out.println("the number is odd");
	  }

	   if ( num_of_beepers4 == 10 )
	  {
		 
	          System.out.println("1) the number of beepers is  10");
              derpy.pickUpAllBeepers();
	  }

	  	   if ( num_of_beepers4 < 10 )
	  {
		 
	          System.out.println("2) the number of beepers is less than 10 and odd");
              derpy.pickBeeper();
			  	   if ( remainder4 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }

	   if ( num_of_beepers4 > 10)
	  {
		 
	          System.out.println("3) the number of beepers is more than 10 and odd");
              derpy.pickBeeper();
			  derpy.pickBeeper();
			  derpy.pickBeeper();
			  	   if ( remainder4 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }



	  derpy.turnRight();
	  derpy.moveNumOfTimes(4);

	  int num_of_beepers5 = derpy.getNumOfBeepers();
		  
      int nine = num_of_beepers5;
 
      int ten = 2;

      System.out.println("x is = " + num_of_beepers5);
      System.out.println("two is = " + two);

      int result5 = nine / ten;
      System.out.print("the result of "+num_of_beepers5+" divided by 2 is " + result5);
         
      int remainder5 = nine % ten;
      System.out.println(" with a remainder of "+remainder5);
      
      if (remainder5 == 0)
      {
      System.out.println("the number is even");
      }
      else
	  { 
      System.out.println("the number is odd");
	  }

	   if ( num_of_beepers5 == 10 )
	  {
		 
	          System.out.println("1) the number of beepers is  10");
              derpy.pickUpAllBeepers();
	  }

	  	   if ( num_of_beepers5 < 10 )
	  {
		 
	          System.out.println("2) the number of beepers is less than 10 and odd");
              derpy.pickBeeper();
			  	   if ( remainder5 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }

	   if ( num_of_beepers5 > 10)
	  {
		 
	          System.out.println("3) the number of beepers is more than 10 and odd");
              derpy.pickBeeper();
			  derpy.pickBeeper();
			  derpy.pickBeeper();
			  	   if ( remainder5 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }



	  derpy.moveNumOfTimes(3);

	  int num_of_beepers6 = derpy.getNumOfBeepers();
		  
      int eleven = num_of_beepers6;
 
      int twelve = 2;

      System.out.println("x is = " + num_of_beepers6);
      System.out.println("two is = " + two);

      int result6 = eleven / twelve;
      System.out.print("the result of "+num_of_beepers6+" divided by 2 is " + result6);
         
      int remainder6 = eleven % twelve;
      System.out.println(" with a remainder of "+remainder6);
      
      if (remainder6 == 0)
      {
      System.out.println("the number is even");
      }
      else
	  { 
      System.out.println("the number is odd");
	  }

	   if ( num_of_beepers6 == 10 )
	  {
		 
	          System.out.println("1) the number of beepers is  10");
              derpy.pickUpAllBeepers();
	  }

	  	   if ( num_of_beepers6 < 10 )
	  {
		 
	          System.out.println("2) the number of beepers is less than 10 and odd");
              derpy.pickBeeper();
			  	   if ( remainder6 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }
	  }

	   if ( num_of_beepers6 > 10)
	  {
		 
	          System.out.println("3) the number of beepers is more than 10 and odd");
              derpy.pickBeeper();
			  derpy.pickBeeper();
			  derpy.pickBeeper();
			  	   if ( remainder6 == 0)
	  {
		 
	          System.out.println("4) is even number");
              derpy.pickBeeper();
	  }

	  }

      derpy.turnRight();
      derpy.moveNumOfTimes(4);
	  derpy.turnLeft();
	  derpy.moveNumOfTimes(4);
	  derpy.turnRight();
	  derpy.moveNumOfTimes(7);
	  derpy.turnRight();
	  derpy.moveNumOfTimes(9);
	  derpy.turnLeft();
	  derpy.moveNumOfTimes(2);
	  derpy.turnLeft();
	  derpy.moveNumOfTimes(11);
      derpy.putAllBeepers();
	  derpy.turn_180_degrees();
	  derpy.move();
	}
}

And when I try to javac that

comp.java:6: cannot find symbol
symbol  : class World
location: class comp
      World yard = new World();
      ^
comp.java:6: cannot find symbol
symbol  : class World
location: class comp
      World yard = new World();
                       ^
.\auto.java:1: cannot find symbol
symbol: class Robot
public class auto extends Robot
                          ^
comp.java:85: cannot find symbol
symbol  : method turnLeft()
location: class auto
      derpy.turnLeft();
           ^
comp.java:91: cannot find symbol
symbol  : method turnLeft()
location: class auto
          derpy.turnLeft();
               ^
comp.java:93: cannot find symbol
symbol  : method turnLeft()
location: class auto
          derpy.turnLeft();
               ^
comp.java:132: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:137: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:145: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:146: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:147: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:152: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:195: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:200: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:208: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:209: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:210: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:215: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:259: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:264: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:272: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:273: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:274: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:279: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:323: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:328: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:336: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:337: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:338: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:343: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:387: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:392: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:400: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:401: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:402: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:407: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:450: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:455: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:463: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:464: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:465: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                          derpy.pickBeeper();
                               ^
comp.java:470: cannot find symbol
symbol  : method pickBeeper()
location: class auto
              derpy.pickBeeper();
                   ^
comp.java:477: cannot find symbol
symbol  : method turnLeft()
location: class auto
          derpy.turnLeft();
               ^
comp.java:483: cannot find symbol
symbol  : method turnLeft()
location: class auto
          derpy.turnLeft();
               ^
comp.java:485: cannot find symbol
symbol  : method turnLeft()
location: class auto
          derpy.turnLeft();
               ^
comp.java:489: cannot find symbol
symbol  : method move()
location: class auto
          derpy.move();
               ^
.\auto.java:16: cannot find symbol
symbol  : method turnLeft()
location: class auto
          turnLeft();
          ^
.\auto.java:17: cannot find symbol
symbol  : method turnLeft()
location: class auto
          turnLeft();
          ^
.\auto.java:18: cannot find symbol
symbol  : method turnLeft()
location: class auto
          turnLeft();
          ^
.\auto.java:23: cannot find symbol
symbol  : method turnLeft()
location: class auto
                turnLeft();
                ^
.\auto.java:24: cannot find symbol
symbol  : method turnLeft()
location: class auto
                turnLeft();
                ^
.\auto.java:36: cannot find symbol
symbol  : method move()
location: class auto
                  move();
                  ^
.\auto.java:44: cannot find symbol
symbol  : method beeperPresent()
location: class auto
             while ( beeperPresent() )
                     ^
.\auto.java:46: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                  pickBeeper();
                  ^
.\auto.java:56: cannot find symbol
symbol  : method hasBeeper()
location: class auto
         while ( hasBeeper() )
                 ^
.\auto.java:58: cannot find symbol
symbol  : method putBeeper()
location: class auto
             putBeeper();
             ^
.\auto.java:68: cannot find symbol
symbol  : method beeperPresent()
location: class auto
            while(beeperPresent())
                  ^
.\auto.java:71: cannot find symbol
symbol  : method pickBeeper()
location: class auto
                   pickBeeper();
                   ^
.\auto.java:77: cannot find symbol
symbol  : method putBeeper()
location: class auto
                 putBeeper();
                 ^
59 errors

I know this is probably an awful lot of work to be corrected, but I didn't keep the .class files. I was on a course in DCU a few weeks ago for Transition Year, and managed to win 50 quid with this code :pac:. We have our year assessment this Wednesday, and I'd love to be able to run this, so any help would be hugely appreciated.

By the way, I've attached the .java files as .txt below. Cheers

damoth · 21-03-2011 10:42pm

Your 'auto' class extends a class called 'Robot' so that Robot.class file is needed to be able to compile without errors.

Also, your 'comp' class creates an object of type 'World' so it requires the World.class file.

Do you have the Robot and World .java or .class files and are they in the same directory as the files you are trying to compile?

giggsy664 · 21-03-2011 10:47pm

Ah right. So if I can source these files it should compile grand?

Edit:
I think that these is the files needed to run the Robot/World

damoth · 22-03-2011 9:13am

Yep, That's exactly what you need.

The 'robot.jar' file will contain any files you need... There's a link to download it near the top of that page so just follow the instructions and you should be fine.

In Java a .jar file is a Java Archive - it's used to package a bunch of java files into one archive so it will contain any files required to be able to compile your program.

Problems compiling

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