com.netflix.servo.util

Class Preconditions

java.lang.Object

com.netflix.servo.util.Preconditions

public final class Preconditions
extends java.lang.Object

Internal convenience methods that help a method or constructor check whether it was invoked correctly. Please notice that this should be considered an internal implementation detail, and it is subject to change without notice.

Method Summary

Modifier and Type	Method and Description
static void	checkArgument(boolean expression, java.lang.String errorMessage) Ensures the truth of an expression involving one or more parameters to the calling method.
static void	checkArgument(boolean expression, java.lang.String errorMessage, java.lang.String... args) Ensures the truth of an expression involving one or more parameters to the calling method.
static <T> T	checkNotNull(T obj, java.lang.String name) Ensures the object reference is not null.

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 obj,
                                 java.lang.String name)

Ensures the object reference is not null.

checkArgument

public static void checkArgument(boolean expression,
                                 java.lang.String errorMessage)

Ensures the truth of an expression involving one or more parameters to the calling method.

Parameters:

expression - a boolean expression

Throws:

java.lang.IllegalArgumentException - if expression is false

checkArgument

public static void checkArgument(boolean expression,
                                 java.lang.String errorMessage,
                                 java.lang.String... args)

Ensures the truth of an expression involving one or more parameters to the calling method.

Parameters:

expression - a boolean expression

errorMessage - the error message that can be a formattable string

args - arguments if using a formatted string

Throws:

java.lang.IllegalArgumentException - if expression is false