io.github.privacystreams.utils

Class Assertions

java.lang.Object

io.github.privacystreams.utils.Assertions

public final class Assertions
extends java.lang.Object

A helper class to get access to assertion-related utilities.

Method Summary

Modifier and Type	Method and Description
static <T> T	cast(java.lang.String name, java.lang.Object value) Cast an object to T.
static void	isTrue(java.lang.String name, boolean condition) Throw IllegalStateException if the condition is false.
static <T> T	notNull(java.lang.String name, T value) Throw IllegalArgumentException if the value is null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

notNull

public static <T> T notNull(java.lang.String name,
                            T value)

Throw IllegalArgumentException if the value is null.

Type Parameters:

T - the value type

Parameters:

name - the parameter name

value - the value that should not be null

Returns:

the value

Throws:

java.lang.IllegalArgumentException - if value is null

isTrue

public static void isTrue(java.lang.String name,
                          boolean condition)

Throw IllegalStateException if the condition is false.

Parameters:

name - the name of the state that is being checked

condition - the condition about the parameter to check

Throws:

java.lang.IllegalStateException - if the condition is false

cast

public static <T> T cast(java.lang.String name,
                         java.lang.Object value)

Cast an object to T. Throw IllegalArgumentException if the the value is not castable.

Type Parameters:

T - the type to cast to

Parameters:

name - the parameter name

value - the value to cast from

Throws:

java.lang.IllegalArgumentException - if the value is not