Java Utililty Methods Type Coerce

@SuppressWarnings("unchecked")
final Class<T> result = (Class<T>) klass;
return result;

if (obj == null || c == null) {
    return null;
if (obj.getClass() == c) {
    return obj;
if (c == Long.class) {
    return (obj instanceof String) ? Long.parseLong(obj.toString().trim()) : ((Number) obj).longValue();
...

if (val == null)
    return val;
if (val.getClass() == clz)
    return val;
if (val instanceof String && (clz == Double.class || clz == double.class))
    return convertDouble((String) val);
if (val instanceof String && (clz == Integer.class || clz == int.class))
    return convertInteger((String) val);
...

if (val == null || c == null) {
    return null;
} else if (val.getClass() == c) {
    return val;
} else if (c == String.class) {
    return castString(val);
} else if (c == Boolean.class) {
    return coerceBool(val);
...

if (clazz.isAssignableFrom(value.getClass())) {
    return (T) value;
if (value instanceof String) {
    String str = (String) value;
    if (clazz.equals(Double.class)) {
        return (T) Double.valueOf(Double.parseDouble(str));
    if (clazz.equals(Float.class)) {
        return (T) Float.valueOf(Float.parseFloat(str));
    if (clazz.equals(Long.class)) {
        return (T) Long.valueOf(Long.parseLong(str));
    if (clazz.equals(Integer.class)) {
        return (T) Integer.valueOf(Integer.parseInt(str));
    if (clazz.equals(Boolean.class)) {
        return (T) Boolean.valueOf(Boolean.parseBoolean(str));
} else {
    throw new IllegalArgumentException(
            "Cannot convert value of " + value.getClass() + " to class = " + clazz.getName());
return (T) value;

return coerce(value, clazz, null);

return !(obj == null || obj.equals(false));

return !(val == null || val.equals(false));

if (entityId == null) {
    return 0;
return entityId + ID_OFFSET;

if (comboId == null || comboId == 0) {
    return null;
return comboId - ID_OFFSET;