Java Utililty Methods Double to Boolean

return d != 0 ? true : false;

if (Math.abs(1 - value) < epsilon) {
    return true;
} else if (Math.abs(value) < epsilon) {
    return false;
} else
    throw new RuntimeException("Failed to convert to boolean, not near zero or one: " + value);

if (values == null) {
    return null;
boolean[] results = new boolean[values.length];
for (int i = 0; i < values.length; i++) {
    results[i] = (values[i] != 0);
return results;
...

return value != 0;