org.jfree.chart.util

Class ParamChecks

java.lang.Object

org.jfree.chart.util.ParamChecks

public class ParamChecks
extends Object

A utility class for checking parameters.

Since:

1.0.14

Constructor Summary

Constructors

Constructor and Description
ParamChecks()

Method Summary

Modifier and Type	Method and Description
static void	nullNotPermitted(Object param, String name) Throws an IllegalArgumentException if the supplied param is null.
static void	requireNonNegative(int value, String name) Throws an IllegalArgumentException if value is negative.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParamChecks

public ParamChecks()

Method Detail

nullNotPermitted

public static void nullNotPermitted(Object param,
                                    String name)

Throws an IllegalArgumentException if the supplied param is null.

Parameters:

param - the parameter to check (null permitted).

name - the name of the parameter (to use in the exception message if param is null).

Throws:

IllegalArgumentException - if param is null.

Since:

1.0.14

requireNonNegative

public static void requireNonNegative(int value,
                                      String name)

Throws an IllegalArgumentException if value is negative.

Parameters:

value - the value.

name - the parameter name (for use in the exception message).

Since:

1.0.18