package com.tinkerpop.frames.util;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
/**
* Helper methods for validating input parameters and state.
*/
public final class Validate {
public static void assertArgument(boolean assertionResult, String message, Object... args) {
if (!assertionResult)
throw new IllegalArgumentException(format(message, args));
}
public static void assertNotNull(Object... args) {
for (Object arg: args)
if (arg == null)
throw new NullPointerException();
}
public static String format(String message, Object... args) {
ByteArrayOutputStream msgStream = new ByteArrayOutputStream();
new PrintStream(msgStream, true).printf(message, args);
return msgStream.toString();
}
}