com.wallee.android.sdk.util

Class Check

java.lang.Object

com.wallee.android.sdk.util.Check

public final class Check
extends java.lang.Object

Helper class which allows easily to check whether an argument is in the right shape.

Method Summary

Modifier and Type	Method and Description
static java.lang.String	requireNonEmpty(java.lang.String obj, java.lang.String message) Checks if the given obj is not null and it is not empty.
static <T> T	requireNonNull(T obj) Checks whether the given obj is null.
static <T> T	requireNonNull(T obj, java.lang.String message) Checks whether the given obj is null.

Methods inherited from class java.lang.Object

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

Method Detail

requireNonNull

public static <T> T requireNonNull(T obj)

Checks whether the given obj is null. If it is null it will throw an IllegalArgumentException.

Type Parameters:

T - the type of the object.

Parameters:

obj - the object which should be checked.

Returns:

the object which is guaranteed not null.

requireNonNull

public static <T> T requireNonNull(T obj,
                                   java.lang.String message)

Checks whether the given obj is null. If it is null it will throw an IllegalArgumentException.

Type Parameters:

T - the type of the object.

Parameters:

obj - the object which should be checked.

message - the message which is thrown when the obj is null.

Returns:

the object which is guaranteed not null.

requireNonEmpty

public static java.lang.String requireNonEmpty(java.lang.String obj,
                                               java.lang.String message)

Checks if the given obj is not null and it is not empty.

Parameters:

obj - the object which should be checked.

message - the message which is thrown when it is empty.

Returns:

the string which is guaranteed not null and not empty.