Package ug.sparkpl.momoapi.Utils

Class Utils

java.lang.Object

ug.sparkpl.momoapi.Utils.Utils

public class Utils
extends java.lang.Object

Method Summary

Modifier and Type	Method	Description
static <T> T	coalesce(T value, T theDefault)	Returns the first non-`null` value of its arguments.
static boolean	isHttpStatusCode(java.lang.Throwable throwable, int statusCode)	Returns true if the Throwable is an instance of RetrofitError with an http status code equals to the given one.
static boolean	isNotNull(java.lang.Object object)
static boolean	isNull(java.lang.Object object)
MomoApiError	parseError(retrofit2.Response<com.google.gson.JsonObject> response)
static <T> T	requireNonNull(T value)	Cast a `null`able value into a non-`null` value, and throw a `NullPointerException` if the value is `null`.
static <T> T	requireNonNull(T value, java.lang.Class<T> klass)	Cast a `null`able value into a non-`null` value, and throw a `NullPointerException` if the value is `null`.
static <T> T	requireNonNull(T value, java.lang.String message)	Cast a `null`able value into a non-`null` value, and throw a `NullPointerException` if the value is `null`.
static java.lang.Boolean	toBoolean(java.lang.String s)	Converts a String to a Boolean, or null if the boolean cannot be parsed.
static java.lang.Integer	toInteger(java.lang.String s)	Converts a String to an Integer, or null if the integer cannot be parsed.
static java.lang.String	toString(java.lang.Double n)	Converts a Double to a String, can be null if the double is also null.
static java.lang.String	toString(java.lang.Float n)	Converts a Float to a String, can be null if the float is also null.
static java.lang.String	toString(java.lang.Integer n)	Converts an Integer to a String, can be null if the integer is also null.
static java.lang.String	toString(java.lang.Long n)	Converts a Long to a String, can be null if the long is also null.

Methods inherited from class java.lang.Object

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

Method Detail

isNull

public static boolean isNull(@Nullable
                             java.lang.Object object)

isNotNull

public static boolean isNotNull(@Nullable
                                java.lang.Object object)

coalesce

@NonNull
public static <T> T coalesce(@Nullable
                             T value,
                             @NonNull
                             T theDefault)

Returns the first non-`null` value of its arguments.

toBoolean

@Nullable
public static java.lang.Boolean toBoolean(@Nullable
                                          java.lang.String s)

Converts a String to a Boolean, or null if the boolean cannot be parsed.

toInteger

@Nullable
public static java.lang.Integer toInteger(@Nullable
                                          java.lang.String s)

Converts a String to an Integer, or null if the integer cannot be parsed.

toString

@Nullable
public static java.lang.String toString(@Nullable
                                        java.lang.Integer n)

Converts an Integer to a String, can be null if the integer is also null.

toString

@Nullable
public static java.lang.String toString(@Nullable
                                        java.lang.Long n)

Converts a Long to a String, can be null if the long is also null.

toString

@Nullable
public static java.lang.String toString(@Nullable
                                        java.lang.Float n)

Converts a Float to a String, can be null if the float is also null.

toString

@Nullable
public static java.lang.String toString(@Nullable
                                        java.lang.Double n)

Converts a Double to a String, can be null if the double is also null.

requireNonNull

@NonNull
public static <T> T requireNonNull(@Nullable
                                   T value)
                            throws java.lang.NullPointerException

Cast a `null`able value into a non-`null` value, and throw a `NullPointerException` if the value is `null`.

Throws:

java.lang.NullPointerException

requireNonNull

@NonNull
public static <T> T requireNonNull(@Nullable
                                   T value,
                                   @NonNull
                                   java.lang.Class<T> klass)
                            throws java.lang.NullPointerException

Cast a `null`able value into a non-`null` value, and throw a `NullPointerException` if the value is `null`. Provide a message for a better description of why you require this value to be non-`null`.

Throws:

java.lang.NullPointerException

requireNonNull

@NonNull
public static <T> T requireNonNull(@Nullable
                                   T value,
                                   @NonNull
                                   java.lang.String message)
                            throws java.lang.NullPointerException

Cast a `null`able value into a non-`null` value, and throw a `NullPointerException` if the value is `null`. Provide a message for a better description of why you require this value to be non-`null`.

Throws:

java.lang.NullPointerException

isHttpStatusCode

public static boolean isHttpStatusCode(java.lang.Throwable throwable,
                                       int statusCode)

Returns true if the Throwable is an instance of RetrofitError with an http status code equals to the given one.

parseError

public MomoApiError parseError(retrofit2.Response<com.google.gson.JsonObject> response)