Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Collection;

public class Main {
    /**
     * Validate given string argument isn't null or empty string.
     *
     * @param arg argument to validate
     * @param argName name of the argument to show in error message
     * @throws IllegalArgumentException
     */
    public static void notNullOrEmpty(String arg, String argName) {
        if (arg == null || arg.length() < 1) {
            throw new IllegalArgumentException("argument is null: " + argName);
        }
    }

    /**
     * Validate given array argument isn't null or empty string.
     *
     * @param arg argument to validate
     * @param argName name of the argument to show in error message
     * @throws IllegalArgumentException
     */
    public static <T> void notNullOrEmpty(T[] arg, String argName) {
        if (arg == null || arg.length < 1) {
            throw new IllegalArgumentException("argument is null: " + argName);
        }
    }

    /**
     * Validate given collection argument isn't null or empty string.
     *
     * @param arg argument to validate
     * @param argName name of the argument to show in error message
     * @throws IllegalArgumentException
     */
    public static <T> void notNullOrEmpty(Collection<T> arg, String argName) {
        if (arg == null || arg.size() < 1) {
            throw new IllegalArgumentException("argument is null: " + argName);
        }
    }
}