There a few places in java.awt.image where a new array is created and then immediately filled with default values.
A few examples:

        int[] bandOffsets = new int[numBands];
        for (int i=0; i < numBands; i++) {
            bandOffsets[i] = 0;
        }
        return bandOffsets;


        zpixel = new int[numComponents];
        java.util.Arrays.fill(zpixel, 0);


        byte[] bpixel = new byte[numComponents];
        for (int i = 0; i < numColorComponents; i++) {
            bpixel[i] = 0;
        }

It's redundant. Java guarantees that all elements of array have default values after array creation.