error correcting code

class GraphicsCardMemory {
    private boolean[] memoryData; // Simulated memory data
    private boolean[] eccBits; // Simulated ECC bits

    public GraphicsCardMemory(int dataSize) {
        memoryData = new boolean[dataSize];
        eccBits = new boolean[dataSize / 8]; // Simulated ECC bits for every 8 data bits
    }

    public void writeMemoryBit(int index, boolean value) {
        if (index >= 0 && index < memoryData.length) {
            memoryData[index] = value;
        }
    }

    public void setECCBit(int index, boolean value) {
        if (index >= 0 && index < eccBits.length) {
            eccBits[index] = value;
        }
    }

    public boolean readMemoryBit(int index) {
        if (index >= 0 && index < memoryData.length) {
            return memoryData[index];
        }
        return false; // Invalid index
    }

    public boolean getECCBit(int index) {
        if (index >= 0 && index < eccBits.length) {
            return eccBits[index];
        }
        return false; // Invalid index
    }

    public boolean isMemoryCorrect() {
        // Simulated ECC error detection and correction logic
        boolean errorDetected = false;
        for (int i = 0; i < memoryData.length; i++) {
            if (memoryData[i] != eccBits[i / 8]) {
                errorDetected = true;
                break;
            }
        }
        return !errorDetected;
    }
}

public class ECCGraphicsCardExample {
    public static void main(String[] args) {
        GraphicsCardMemory gpuMemory = new GraphicsCardMemory(32); // Simulated memory of size 32 bits

        // Simulated data and ECC bit settings
        for (int i = 0; i < 32; i++) {
            gpuMemory.writeMemoryBit(i, i % 2 == 0);
            gpuMemory.setECCBit(i / 8, i % 3 == 0);
        }

        // Simulated ECC error
        gpuMemory.writeMemoryBit(15, !gpuMemory.readMemoryBit(15)); // Introduce an error

        if (gpuMemory.isMemoryCorrect()) {
            System.out.println("Graphics card memory is error-free.");
        } else {
            System.out.println("Graphics card memory has errors.");
        }
    }
}