Java Utililty Methods Assert Null

List of utility methods to do Assert Null

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Description

The list of methods to do Assert Null are organized into topic(s).

Method

voidassertNull(Object obj)
assert Null 
assertNull(obj, "[Assertion failed] - This object argument must be null.");
voidassertNull(Object object)
Check that object is null. 
if (object != null) {
    throw new IllegalArgumentException("[Assertion failed] - the object argument must be null");
voidassertNull(Object object, String errMsg)
assert Null 
if (object != null) {
    throw new RuntimeException(errMsg);
voidassertNull(Object object, String message)
Solleva una @link(IllegalArgumentException) con message message in caso di object non null 
if (object != null) {
    throw new IllegalArgumentException(message);
voidassertNull(String message, Object object)
assert Null 
assertTrue(message, object == null);
voidassertNull(String message, Object object)
Asserts that an object is null. 
assertTrue(message, object == null);
voidassertNull(String message, Object val)
assert Null 
if (message != null)
    assert val == null : message;
else
    assert val == null;
voidassertNull(String string, Object obj)
assert Null 
assertTrue(string, obj == null);
voidassertObjectNullOrIsInstance(Object obj, Class expectedType, String name)
Check if the given object is an instance of the expected class. 
if (obj != null && !expectedType.isInstance(obj)) {
    throw new IllegalArgumentException(name + " of type [" + obj.getClass().getName()
            + "] should be an instance of " + expectedType.getName());