org.jmxtrans.embedded.util

Class Preconditions

java.lang.Object

org.jmxtrans.embedded.util.Preconditions

public class Preconditions
extends Object

Inspired by com.google.common.base.Preconditions

Author:

Cyrille Le Clerc

Method Summary

Modifier and Type	Method and Description
static String	checkNotEmpty(String reference) Check the nullity and emptiness of the given reference.
static String	checkNotEmpty(String reference, String message) Check the nullity and emptiness of the given reference.
static <T> T	checkNotNull(T reference) Check the nullity of the given reference.
static <T> T	checkNotNull(T reference, String message) Check the nullity of the given reference.
static void	checkState(boolean state, String message) Check the given state.

Methods inherited from class java.lang.Object

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

Method Detail

checkNotNull

public static <T> T checkNotNull(T reference)
                          throws NullPointerException

Check the nullity of the given reference.

Parameters:

reference - reference to check

Returns:

the given reference

Throws:

NullPointerException - if the given reference is null

checkNotNull

public static <T> T checkNotNull(T reference,
                                 @Nullable
                                 String message)
                          throws NullPointerException

Check the nullity of the given reference.

Parameters:

reference - reference to check

message - exception message, can be null

Returns:

the given reference

Throws:

NullPointerException - if the given reference is null

checkNotEmpty

public static String checkNotEmpty(String reference)
                            throws IllegalArgumentException

Check the nullity and emptiness of the given reference.

Parameters:

reference - reference to check

Returns:

the given reference

Throws:

IllegalArgumentException - if the given reference is null

checkNotEmpty

public static String checkNotEmpty(String reference,
                                   @Nullable
                                   String message)
                            throws IllegalArgumentException

Check the nullity and emptiness of the given reference.

Parameters:

reference - reference to check

message - exception message, can be null

Returns:

the given reference

Throws:

IllegalArgumentException - if the given reference is null

checkState

public static void checkState(boolean state,
                              @Nullable
                              String message)
                       throws IllegalStateException

Check the given state.

Parameters:

state - the state top check

message - exception message, can be null

Throws:

IllegalStateException - if the given state is false