goja-core/src/main/java/goja/core/kits/lang/CharKit.java
public static byte[] toSimpleByteArray(char[] carr) {
        byte[] barr = new byte[carr.length];
        for (int i = 0; i < carr.length; i++) {
            barr[i] = (byte) carr[i];
        }
        return barr;
    }
public static byte[] toSimpleByteArray(char[] carr) {
        byte[] barr = new byte[carr.length];
        for (int i = 0; i < carr.length; i++) {
            barr[i] = (byte) carr[i];
        }
        return barr;
    }
Converts char array into byte array by stripping the high byte of each character.