Problems calling methods with arrays.

[pyat77]

I decided to write my first genetic algorithm today for fun, but I am getting many ".class expected" errors that seem to have something to do with the way I use arrays. (I've never used arrays like this before, so there's probably something really simple that I'm not understanding about them.)
The goal of the program is to create a 16 bit binary sequence that matches the one given using genetic-style methods.
As I'm new to this, there are probably better ways of doing this, but thats not really the issue.

import java.util.Random;

public class GeneticTesting{
	public static void main(String[] args){
		Random rand = new Random();
		int goal[] = {1,0,0,0,0,0,0,1,0,1,1,0,0,0,1,0};
		int generation[][] = generate();
		int closetMatch[] = getClosestMatch(generation[][], goal[]);
		int success = checkClosestMatch(closestMatch[] , goal[]);
		int iterations = 1;
		while(success != true){
			generation[][] = mutate(closestMatch[]);
			closetMatch[] = getClosestMatch(generation[][], goal[]);
			success = checkClosestMatch(closestMatch[], goal[]);
			iterations++;
		}
		System.out.println("Iterations: " + iterations);
	}
	public int[][] generate(){
		for(int x=0;x<10;x++){
			for(int y=0;y<16;y++){
				generation[x][y] = rand.nextInt(1);
			}
		}
		return generation[][];
	}

	public int[] getClosestMatch(int generation[][] , int goal[]){
		int closestMatch = 0;
		int highestMatch = 0;
		for(int x=0;x<10;x++){
			int matches = 0;
			for(int y=0;y<16;y++){
				if(equals(goal[y],generation[x][y]){
					matches++;
				}
				if(matches > highestMatch){
					matches = highestMatch;
					closestMatch = x;
				}
			}
		}
		return generation[x][];
	}
	public boolean checkClosestMatch(int closestMatch[] , int goal[]){
		if(deepEquals(closestMatch[], goal[])){
			return true;
		}
		else {
			return false;
		}
	}
	public int[][] mutate(int closestMatch[]){
		int generation[9][15];
		generation[1][] = closestMatch[];
		for(x=1;x<10;x++){
			generation[x][rand.newRand(7)] = rand.newRand(1);
			generation[x][rand.newRand(7)+8] = rand.newRand(1);
		}
		return generation[][];
	}
}

Could anyone show what I'm doing wrong? Thanks.

[Junky]

Post the exact error messages you are getting.

[pyat77]

/Users/Paul/Programs/Java/GeneticTesting.java:8: '.class' expected
		int closetMatch[] = getClosestMatch(generation[][], goal[]);
		                                                  ^
/Users/Paul/Programs/Java/GeneticTesting.java:8: '.class' expected
		int closetMatch[] = getClosestMatch(generation[][], goal[]);
		                                                          ^
/Users/Paul/Programs/Java/GeneticTesting.java:9: '.class' expected
		int success = checkClosestMatch(closestMatch[] , goal[]);
		                                               ^
/Users/Paul/Programs/Java/GeneticTesting.java:9: '.class' expected
		int success = checkClosestMatch(closestMatch[] , goal[]);
		                                                       ^
/Users/Paul/Programs/Java/GeneticTesting.java:12: not a statement
			generation[][] = mutate(closestMatch[]);
			          ^
/Users/Paul/Programs/Java/GeneticTesting.java:12: ';' expected
			generation[][] = mutate(closestMatch[]);
			              ^
/Users/Paul/Programs/Java/GeneticTesting.java:12: '.class' expected
			generation[][] = mutate(closestMatch[]);
			                                      ^
/Users/Paul/Programs/Java/GeneticTesting.java:13: not a statement
			closetMatch[] = getClosestMatch(generation[][], goal[]);
			           ^
/Users/Paul/Programs/Java/GeneticTesting.java:13: ';' expected
			closetMatch[] = getClosestMatch(generation[][], goal[]);
			             ^
/Users/Paul/Programs/Java/GeneticTesting.java:13: '.class' expected
			closetMatch[] = getClosestMatch(generation[][], goal[]);
			                                              ^
/Users/Paul/Programs/Java/GeneticTesting.java:13: '.class' expected
			closetMatch[] = getClosestMatch(generation[][], goal[]);
			                                                      ^
/Users/Paul/Programs/Java/GeneticTesting.java:14: '.class' expected
			success = checkClosestMatch(closestMatch[], goal[]);
			                                          ^
/Users/Paul/Programs/Java/GeneticTesting.java:14: '.class' expected
			success = checkClosestMatch(closestMatch[], goal[]);
			                                                  ^
/Users/Paul/Programs/Java/GeneticTesting.java:25: '.class' expected
		return generation[][];
		                     ^
/Users/Paul/Programs/Java/GeneticTesting.java:34: ')' expected
				if(equals(goal[y],generation[x][y]){
				                                   ^
/Users/Paul/Programs/Java/GeneticTesting.java:43: illegal start of expression
		return generation[x][];
		                     ^
/Users/Paul/Programs/Java/GeneticTesting.java:46: '.class' expected
		if(deepEquals(closestMatch[], goal[])){
		                            ^
/Users/Paul/Programs/Java/GeneticTesting.java:46: '.class' expected
		if(deepEquals(closestMatch[], goal[])){
		                                    ^
[Finished]/Users/Paul/Programs/Java/GeneticTesting.java:54: ']' expected
		int generation[9][15];
		               ^
/Users/Paul/Programs/Java/GeneticTesting.java:54: illegal start of expression
		int generation[9][15];
		                ^
/Users/Paul/Programs/Java/GeneticTesting.java:54: ';' expected
		int generation[9][15];
		                 ^
/Users/Paul/Programs/Java/GeneticTesting.java:54: not a statement
		int generation[9][15];
		                  ^
/Users/Paul/Programs/Java/GeneticTesting.java:54: ';' expected
		int generation[9][15];
		                    ^
/Users/Paul/Programs/Java/GeneticTesting.java:55: illegal start of expression
		generation[1][] = closestMatch[];
		              ^
/Users/Paul/Programs/Java/GeneticTesting.java:55: '.class' expected
		generation[1][] = closestMatch[];
		                                ^
/Users/Paul/Programs/Java/GeneticTesting.java:60: '.class' expected
		return generation[][];
		                     ^
26 errors

[Junky]

You only use the square brackets when accessing an element inside the array. If you want to refer to the entire array then you just use the variable name.