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Thread: Exception in thread "main" java.lang.NoSuchMethodError: main

  1. #1
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    Default Exception in thread "main" java.lang.NoSuchMethodError: main

    Here I have a program called Connect4Model. Basically what the problem is that I have successfully compiled the program in TextPad. However when I run the program it throws up an Exception in thread "main" error. I fully understand what this error is, and it basically means that I'm missing the main method as shown below. However what I can see is how I can implement this. If there is a possible solution this would be great.

    Thanks


    public class Connect4Model
    {
    	Connect4Column [] columns;
    	int my_array[];
    	private int NUM_COLUMNS;
    	private int NUM_ROWS;
    	private int playerToGoNext = Connect4Column.RED_COUNTER;
     
    	Connect4Model(int numCols, int numRows)
    	{
    		columns = new Connect4Column[NUM_COLUMNS];
     
    		for (int i = 0;i < NUM_COLUMNS;i++)
    		{
    			columns[i] = new Connect4Column(NUM_ROWS);
    		}
    	}
    	int getNumCols()
    	{
    		return 0;
    	}
    	int getNumRows()
    	{
    		return 0;
    	}
    	int getNextPlayer()
    	{
    		return 0;
    	}
    	boolean go(int thisColumn)
    	{
    		if ( thisColumn < 0 ||  thisColumn >= NUM_COLUMNS)
    		{
    			return false;
    		}
     
    		else  if(my_array[thisColumn] >= NUM_ROWS)
    		{
    			return false;
    		}
    		else
    		{
    			my_array[playerToGoNext]++;
    			return true;
    		}
    	}
    	int getCounter(int thisColumn, int thisRow)
    	{
    		return 0;
    	}
    	int getNumCounters(int thisColumn)
    	{
    		if(thisColumn >= 0 && thisColumn < NUM_COLUMNS)
    		{
    			return my_array[thisColumn];
    		}
    		else
    		{
    			return 0;
    		}
    	}
     
    }


  2. #2
    mmm.. coffee JavaPF's Avatar
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    Default Re: Exception in thread "main" java.lang.NoSuchMethodError: main

    Hello dj118, welcome to the forums.

    Seeing as this thread is about Exceptions. I have moved it here: Exceptions - Java Programming Forums

    Can we see the Connect4Column class?
    Please use [highlight=Java] code [/highlight] tags when posting your code.
    Forum Tip: Add to peoples reputation by clicking the button on their useful posts.

  3. The Following User Says Thank You to JavaPF For This Useful Post:

    dj118 (March 26th, 2010)

  4. #3
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    Default Re: Exception in thread "main" java.lang.NoSuchMethodError: main

    Quote Originally Posted by JavaPF View Post
    Hello dj118, welcome to the forums.

    Seeing as this thread is about Exceptions. I have moved it here: Exceptions - Java Programming Forums

    Can we see the Connect4Column class?
    Sure you can see the Connect4Class. I've attached my code on the following link, as I don't know how to put the code within the tags. Java | public class Connect4Column { - Anonymous - 1A1PadCq - Pastebin.com

    public class Connect4Column
    {
    	private int counters[];
    	private int numCounters;
    	private int MAX_NUM_COUNTERS;
     
    	static int YELLOW_COUNTER = 1;
    	static int RED_COUNTER = 2;
     
    	public Connect4Column(int max_counters)
    	{
    		MAX_NUM_COUNTERS = max_counters;
    		counters = new int[MAX_NUM_COUNTERS];
    		numCounters = 0;
    	}
     
    	public boolean addCounter(int thisCounter)
    	{
    		if ((numCounters < MAX_NUM_COUNTERS)&&((thisCounter == 1)||(thisCounter == 2)))
    		{
    			counters[numCounters] = thisCounter;
    			numCounters++;
    			return true;
    		}
    		else
    		{
    			return false;
    		}
    	}
     
    	public int getNumCounters()
    	{
    		return numCounters;
    	}
     
    	public int getCounter(int thisRow)
    	{
    		if ((thisRow >= 0)&&(thisRow <= numCounters))
    		{
    			return counters[thisRow];
    		}
    		else
    		{
    			return 0;
    		}
    	}
    }
    I don't know if this is the correct way of putting the code into the CODE tags. But the link is also avaliable

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