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

voidassertObjectNotNull(String variableName, Object value)
assert Object Not Null 
if (variableName == null) {
    String msg = "The value should not be null: variableName=null value=" + value;
    throw new IllegalArgumentException(msg);
if (value == null) {
    String msg = "The value should not be null: variableName=" + variableName;
    throw new IllegalArgumentException(msg);
voidassertObjectNotNull(String variableName, Object value)
Assert that the object is not null. 
if (variableName == null) {
    String msg = "The value should not be null: variableName=null value=" + value;
    throw new IllegalArgumentException(msg);
if (value == null) {
    String msg = "The value should not be null: variableName=" + variableName;
    throw new IllegalArgumentException(msg);
voidassertParameterNotNull(Object parameterValue, String errorMessage)

Asserts that the specified parameter value is not null and if it is, throws an IllegalArgumentException with the specified error message. 

if (parameterValue == null) {
    throw new IllegalArgumentException(errorMessage);
voidassertParamNotNull(Object check, String paramName)
assert Param Not Null 
if (check == null) {
    throw new IllegalArgumentException(paramName + " is null");
voidassertParamNotNull(String param, String paramName)
Parameter validation. 
if (param == null || param.isEmpty()) {
    throw new IllegalArgumentException("Missing Parameter '" + paramName + "' must not be null nor empty");
voidassertPatternNotNull(String methodName, String pattern)
assert Pattern Not Null 
if (pattern == null) {
    String msg = "The argument 'pattern' should not be null: method=" + methodName;
    throw new IllegalArgumentException(msg);
voidassertResourceNotNull(String resourcePath, Object resourceHandle)
assert Resource Not Null 
if (resourceHandle == null) {
    throw new IllegalArgumentException("Could not find the classpath resource at: " + resourcePath + ".");
voidassertStringNotNullAndNotTrimmedEmpty(String variableName, String value)
Assert that the entity is not null and not trimmed empty. 
assertObjectNotNull("variableName", variableName);
assertObjectNotNull("value", value);
if (value.trim().length() == 0) {
    String msg = "The value should not be empty: variableName=" + variableName + " value=" + value;
    throw new IllegalArgumentException(msg);
voidassertStringNotNullNorEmpty(String str, String name)
Check if the given string is null or empty (trimmed). 
assertObjectNotNull(str, name);
if (str.trim().length() == 0) {
    throw new IllegalArgumentException(name + " should not be empty (trimmed).");
voidassertStringNotNullOrEmpty(String str, String name)

Check if the string is null or empty. 

assertObjectNotNull(str, name);
if (str.trim().length() == 0) {
    throw new IllegalArgumentException(name + " must not be empty.");