org.jvnet.jaxb2_commons.lang.Validate Maven / Gradle / Ivy
package org.jvnet.jaxb2_commons.lang;
import java.util.Collection;
import java.util.Iterator;
public class Validate {
public static void notNull(Object object) {
if (object == null) {
throw new IllegalArgumentException("The validated object is null");
}
}
public static void isTrue(boolean expression) {
if (expression == false) {
throw new IllegalArgumentException(
"The validated expression is false");
}
}
public static void notEmpty(@SuppressWarnings("rawtypes") Collection collection) {
if (collection == null || collection.size() == 0) {
throw new IllegalArgumentException(
"The validated collection is empty");
}
}
public static void noNullElements(Collection collection) {
Validate.notNull(collection);
int i = 0;
for (Iterator it = collection.iterator(); it.hasNext(); i++) {
if (it.next() == null) {
throw new IllegalArgumentException(
"The validated collection contains null element at index: "
+ i);
}
}
}
}