Package android.pal.item.utils

Class Assertions

java.lang.Object

android.pal.item.utils.Assertions

public final class Assertions
extends Object

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

Method Summary

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

IllegalArgumentException - if value is null

isTrue

public static void isTrue(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:

IllegalStateException - if the condition is false

cast

public static <T> T cast(String name,
                         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:

IllegalArgumentException - if the value is not