UVA Problem ID 10336 (Rank the Languages)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {
	static char grid[][];
	static boolean wasVisited[][];
	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		String input;
		StringBuilder sb=new StringBuilder(1000);
		int testcase=Integer.parseInt(br.readLine());
		for (int t1 = 0; t1 rowlimit || column>columnlimit || row<0 || column<0 || wasVisited[row][column]==true)
			return ;
		if(grid[row][column]==c)
		{
			grid[row][column]='.';
			wasVisited[row][column]=true;
		
		
		floodfill(row-1,column,c,rowlimit,columnlimit);
		floodfill(row,column-1,c,rowlimit,columnlimit);
		floodfill(row,column+1,c,rowlimit,columnlimit);
		floodfill(row+1,column,c,rowlimit,columnlimit);
		}
		
	}
}
class Token implements Comparable
{
	char name;
	int count;
	public Token(char n,int c)
	{
		name=n;
		count=c;
	}
	
	@Override
	public int compareTo(Token t1) {
		if(this.count>t1.count)
			return -1;
		else 
			return 1;
	}
}