Java org.apache.commons.lang Validate fields, constructors, methods, implement or subclass

Validate an argument, throwing IllegalArgumentException if the argument collection is null or has elements that are not of type clazz or a subclass.

Validate an argument, throwing IllegalArgumentException if the argument collection is null or has elements that are not of type clazz or a subclass.

 Validate.allElementsOfType(collection, String.class, "Collection has invalid elements"); 

Validate an argument, throwing IllegalArgumentException if the test result is false.

This is used when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

 Validate.isTrue( i > 0 ); Validate.isTrue( myObject.isOk() ); 

The message in the exception is 'The validated expression is false'.

Validate an argument, throwing IllegalArgumentException if the test result is false.

This is used when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

 Validate.isTrue( (i > 0), "The value must be greater than zero"); Validate.isTrue( myObject.isOk(), "The object is not OK"); 

For performance reasons, the message string should not involve a string append, instead use the #isTrue(boolean,String,Object) method.

Validate an argument, throwing IllegalArgumentException if the test result is false.

This is used when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

 Validate.isTrue( myObject.isOk(), "The object is not OK: ", myObject); 

For performance reasons, the object is passed as a separate parameter and appended to the message string only in the case of an error.

Validate an argument, throwing IllegalArgumentException if the test result is false.

This is used when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

 Validate.isTrue( i > 0, "The value must be greater than zero: ", i); 

For performance reasons, the long value is passed as a separate parameter and appended to the message string only in the case of an error.

Validate an argument, throwing IllegalArgumentException if the test result is false.

This is used when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

 Validate.isTrue( d > 0.0, "The value must be greater than zero: ", d); 

For performance reasons, the double value is passed as a separate parameter and appended to the message string only in the case of an error.

Validate an argument, throwing IllegalArgumentException if the argument array has null elements or is null.

 Validate.noNullElements(myArray, "The array must not contain null elements"); 

If the array is null then the message in the exception is 'The validated object is null'.

Validate an argument, throwing IllegalArgumentException if the argument Collection has null elements or is null.

 Validate.noNullElements(myCollection, "The collection must not contain null elements"); 

If the collection is null then the message in the exception is 'The validated object is null'.

Validate an argument, throwing IllegalArgumentException if the argument array has null elements or is null.

 Validate.noNullElements(myArray); 

If the array has a null element the message in the exception is 'The validated array contains null element at index: '.

If the array is null then the message in the exception is 'The validated object is null'.

Validate an argument, throwing IllegalArgumentException if the argument Collection has null elements or is null.

 Validate.noNullElements(myCollection); 

The message in the exception is 'The validated collection contains null element at index: '.

If the collection is null then the message in the exception is 'The validated object is null'.

Validate an argument, throwing IllegalArgumentException if the argument array is empty (null or no elements).

 Validate.notEmpty(myArray, "The array must not be empty"); 

Validate an argument, throwing IllegalArgumentException if the argument Collection is empty (null or no elements).

 Validate.notEmpty(myCollection, "The collection must not be empty"); 

Validate an argument, throwing IllegalArgumentException if the argument Map is empty (null or no elements).

 Validate.notEmpty(myMap, "The map must not be empty"); 

Validate an argument, throwing IllegalArgumentException if the argument String is empty (null or zero length).

 Validate.notEmpty(myString, "The string must not be empty"); 

Validate an argument, throwing IllegalArgumentException if the argument array is empty (null or no elements).

 Validate.notEmpty(myArray); 

The message in the exception is 'The validated array is empty'.

Validate an argument, throwing IllegalArgumentException if the argument Collection is empty (null or no elements).

 Validate.notEmpty(myCollection); 

The message in the exception is 'The validated collection is empty'.

Validate an argument, throwing IllegalArgumentException if the argument Map is empty (null or no elements).

 Validate.notEmpty(myMap); 

The message in the exception is 'The validated map is empty'.

Validate an argument, throwing IllegalArgumentException if the argument String is empty (null or zero length).

 Validate.notEmpty(myString); 

The message in the exception is 'The validated string is empty'.

Validate an argument, throwing IllegalArgumentException if the argument is null.

 Validate.notNull(myObject, "The object must not be null"); 

Validate an argument, throwing IllegalArgumentException if the argument is null.

 Validate.notNull(myObject); 

The message in the exception is 'The validated object is null'.