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Thread: not spelling errors

  1. #1
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    Default not spelling errors

    Im new to java so please give me a chance.I got some code from university but it just doesnt seem to work, I thought my problem was a spelling mistake but when i fix 1 problem i ca get many more and they dnt make any sence....

    the programs split into 4 parts,

    public class GraphicsDemo
    {
    	public static final int indent = 5;
    	public static final int topWidth = 21;
    	public static final int bottomWidth = 4; 
    	public static final int bottomHeight = 4;
     
    	public static void main(String[] args)
    	{
    		System.out.println("         Save the Redwoods!");
     
    		Triangle top = new Triangle(indent, topwidth);
    		Box base = new Box(indent + (topWidth/2)   (bottomWidth/2),
    					    bottomHeight, bottomWidth);
     
    	top.drawAt(1);
    	base.drawAt(0);
    	}
    }

    Next is

    public class Triangle extends Figure
    {
    	private int base;
     
    	public Triangle()
    	{
    		super();
    		base = 0; 
    	}
     
    	public Triangle( int theOffset, int theBase)
    	{
    		super(theOffset);
    		base = theBase;
    	}
     
    	public void reset(int newOffset, int newBase)
    	{
    		setOffset(newOffset);
    		base = newBase;
    	}
     
    	public void drawHere()
    	{
    		drawTop();
    		drawBase();
    	}
     
    		private void drawBase()
    		{
    			spaces(getOffset());
    			int count;
    			for (count = 0; count < base; count ++)
    				System.out.print('*');
    				System.out.println();
    		}
     
    		private void drawTop()
    		{
    		int startOfLine = getOffset() + (base/2);
    		spaces(startOfLine);
    		System.out.println('*');
    		int count;
    		int lineCount = (base/2) - 1;
    		int insideWidth = 1;
     
    		for (count = 0; count < lineCount; count++)
    		{
    			startOfLine--;
    			spaces(startOfLine);
    			System.out.print('*');
    			spaces(insideWidth);
    			System.out.println('*');
    			insideWidth = insideWidth + 2;
    		}
    	}	
    	private static void spaces(int number)
    	{
    		int count;
    		for (count = 0; count < number; count++)
    		System.out.print(' ');
    	}
    }

    next is:

    public class Figure
    {
     
    	private int offset;
     
    	public Figure()
    	{
    		offset = 0;
    	}
     
    	public Figure(int theOffset)
    	{
    		offset = theOffset;
    	}
     
    	public void setOffset(int newOffset)
    	{
    		offset = newOffset;
    	}
     
    	public int getOffset()
    	{
    		return offset;
    	}
     
    	public void drawAt(int lineNumber)
    	{
    		int count;
    		for (count = 0; count < lineNumber; count++)
    			System.out.println();
    }
    			public void drawHere()
     
    			{
    				int count;
    				for(count = 0; count < offset;count++)
    					System.out.print(' ');
    					System.out.println('*');
    			}
     
    }

    next is:

    public class Box extends Figure
    {
    	private int height;
    	private int width;
     
    	public Box()
    	{
    		super();
    		height = 0;
    		width = 0;
    	}
     
    		public Box( int theOffset, int theHeight, int theWidth)
    		{
    			super(theOffset);
    			height = theHeight;
    			width = theWidth;
    		}
     
    		public void reset( int newOffset, int newHeight, int newWidth )
    		{
    			setOffset(newOffset);
    			height = newHeight;
    			width = newWidth;
    		}
    			public void drawHere()
    			{
    				drawHorizontalLine();
    				drawSides();
    				drawHorizontalLine();
    			}
     
    			private void drawHorizontalLine()
    			{
    				spaces(getOffset());
    				int count;
    				for (count = 0; count < (height -2); count++)
    					System.out.println('-');
    					System.out.println();
     
    			}
    			private void drawSides()
    			{
    				int count;
    				for (count = 0; count < (height - 2); count++)
    					drawOneLineOfSides();
     
    			}
     
    			private void drawOneLineOfSides()
    			{
    				spaces(getOffset());
    				System.out.println('|');
    				spaces(width - 2);
    				System.out.println('|');
    			}
    				private static void spaces(int number)
    			{
    				int count;
    				for (count = 0; count < number; count++)
    					System.out.print(' ');
     
    			}
    }

    My error/s are in graphics demo but aremany different ones,
    just wondering can anyone spot any mistake, thanks
    Last edited by Json; April 28th, 2010 at 11:26 AM. Reason: Please use code tags!


  2. #2
    Administrator copeg's Avatar
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    Default Re: not spelling errors

    The compiler/jre should give a fairly precise description of what's wrong. It always helps to post that info to point us in the right direction. What I see without that is your instantiation of a Box object:
    Box base = new Box(indent + (topWidth/2)   (bottomWidth/2),
    					    bottomHeight, bottomWidth);

    The compiler needs a math operation between '(topWidth/2) (bottomWidth/2)' , I'm guessing its multiplication, so the following might work

    Box base = new Box(indent + (topWidth/2)  * (bottomWidth/2),
    					    bottomHeight, bottomWidth);

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