Java Utililty Methods Assert Not Null

List of utility methods to do Assert Not Null

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Description

The list of methods to do Assert Not Null are organized into topic(s).

Method

voidassertNotNull(Object... params)
Check that object is not null. 
if (params != null) {
    for (int idx = 0; idx < params.length; idx++) {
        Object currentparam = params[idx];
        if (null == currentparam) {
            throw new IllegalArgumentException(
                    "[Assertion failed] - Parameter #" + idx + "(object)  must not be null");
voidassertNotNull(Object... params)
Check that object is not null. 
assertNotNull("parameter", params);
voidassertNotNull(String errorMessage, Object... args)
assert Not Null 
if (args == null || args.length == 0) {
    throw new IllegalArgumentException("Nie podano argumentow do ewaluacji");
for (Object s : args) {
    if (s == null) {
        throw new IllegalArgumentException("Argument nie moze byc nullem");
voidassertNotNull(String fieldName, Object object)
assert Not Null 
return;
voidassertNotNull(String message, Object object)
Asserts that an object isn't null. 
assertTrue(message, object != null);
voidassertNotNull(String message, Object val)
assert Not Null 
if (message != null)
    assert val != null : message;
else
    assert val != null;
ObjectassertNotNull(String variableName, Object value)
Method throws NullPointerException when the variable named variableName has a null value. 
if (value == null)
    throw new NullPointerException("The variable named " + variableName + " is null.");
return value;
voidassertNotNull(StringBuilder buffer)
assert Not Null 
if (buffer == null) {
    throw new NullPointerException("The buffer cannot be null");
voidassertNotNull(T exception, Object... objects)
assert Not Null 
for (Object object : objects) {
    if (object == null) {
        throw exception;
TassertNotNull(T o)
assert Not Null 
if (o == null) {
    throw new AssertionError("A reference was unexpectedly null.");
return o;