com.whitestein.lsps.common

Class Assert

java.lang.Object

com.whitestein.lsps.common.Assert

public final class Assert
extends Object

Utility methods for checking values of parameters, etc.

Author:

rba

Method Summary

Modifier and Type	Method and Description
static void	checkArgument(boolean condition) If the condition is false, the method throws IllegalArgumentException.
static void	checkArgument(boolean condition, String errorMessage) If the condition is false, the method throws IllegalArgumentException.
static String	checkNotBlank(String string, String stringName) Returns given string if it is not "blank" (i.e. it is not null and does not contain just whitespace characters).
static <T> T	checkNotNull(T object) Deprecated. Use Objects.requireNonNull(Object)
static <T> T	checkNotNull(T object, String objectName) Deprecated. Use Objects.requireNonNull(Object, String)
static void	checkState(boolean condition) If the condition is false, the method throws IllegalStateException.
static void	checkState(boolean condition, String errorMessage) If the condition is false, the method throws IllegalStateException.

Methods inherited from class java.lang.Object

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

Method Detail

checkNotNull

@Deprecated
public static <T> T checkNotNull(T object)

Deprecated. Use Objects.requireNonNull(Object)

If the object is null, the method throws IllegalArgumentException.

Type Parameters:

T - type of the object

Parameters:

object - object to check

Returns:

passed object

Throws:

IllegalArgumentException - if object is null

checkNotNull

@Deprecated
public static <T> T checkNotNull(T object,
                                             String objectName)

Deprecated. Use Objects.requireNonNull(Object, String)

If the object is null, the method throws IllegalArgumentException.

Type Parameters:

T - type of the object

Parameters:

object - object to check

objectName - object name passed to error message

Returns:

passed object

Throws:

IllegalArgumentException - if object is null

checkArgument

public static void checkArgument(boolean condition)

If the condition is false, the method throws IllegalArgumentException.

Parameters:

condition - condition to check

Throws:

IllegalArgumentException - if condition is false

checkArgument

public static void checkArgument(boolean condition,
                                 String errorMessage)

If the condition is false, the method throws IllegalArgumentException.

Parameters:

condition - condition to check

errorMessage - error message

Throws:

IllegalArgumentException - if condition is false

checkState

public static void checkState(boolean condition)

If the condition is false, the method throws IllegalStateException.

Parameters:

condition - condition to check

Throws:

IllegalStateException - if condition is false

checkState

public static void checkState(boolean condition,
                              String errorMessage)

If the condition is false, the method throws IllegalStateException.

Parameters:

condition - condition to check

errorMessage - error message

Throws:

IllegalStateException - if condition is false

checkNotBlank

public static String checkNotBlank(String string,
                                   String stringName)

Returns given string if it is not "blank" (i.e. it is not null and does not contain just whitespace characters).

Parameters:

string - the string to check if it is not blank

stringName - the name of the string variable that is checked (used for displaying in a thrown exception)

Returns:

given string if it is not blank

Throws:

NullPointerException - (unchecked) if the string argument is null

IllegalArgumentException - (unchecked) if the string argument contains just whitespace characters