OISC Implementation in Java

OISC.java

public class OISC {
	int programCounter, a, b, c;

	void run(int[] memory) {
		while (programCounter >= 0) {
			/*System.out.printf("-----\n");
			for (int i = 0; i < memory.length; i++) {
				System.out.printf("%d\t|%d\n", i, memory[i]);
			}
			System.out.printf("-----\n");*/
			a = memory[programCounter];
			b = memory[programCounter + 1];
			c = memory[programCounter + 2];

			if (a < 0 || b < 0) {
				programCounter = -1;
			} else {
				memory[b] = memory[b] - memory[a];

				if (memory[b] > 0) {
					programCounter += 3;
				} else {
					programCounter = c;
				}
			}
		}
	}

	public static void main(String[] args) {
		int[] memory = {
				10, 9, 3,
				9, 11, 6,
				9, 9, 9,
				0, 2, 5,
		};

		System.out.printf("-----\n");
		for (int i = 0; i < memory.length; i++) {
			System.out.printf("%d\t|%d\n", i, memory[i]);
		}
		System.out.printf("-----\n");

		OISC vm = new OISC();
		vm.run(memory);

		System.out.printf("-----\n");
		for (int i = 0; i < memory.length; i++) {
			System.out.printf("%d\t|%d\n", i, memory[i]);
		}
		System.out.printf("-----\n");

	}
}