Main.java Source code

Introduction

Here is the source code for Main.java

Source

/*
 * Copyright 2005 Joe Walker
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;

/**
    
 * @author Joe Walker [joe at getahead dot ltd dot uk]
 */
public class Main {

    /**
     * Determines if the specified string contains only Unicode letters or
     * digits as defined by {@link Character#isLetterOrDigit(char)}
     * @param test The string to test
     * @return true if the string is non-null, non-empty and contains only
     * characters that are unicode letters or digits
     * @see Character#isLetterOrDigit(char)
     */
    public static boolean isLetterOrDigitOrUnderline(String test) {
        if (test == null || test.length() == 0) {
            return false;
        }

        for (int i = 0; i < test.length(); i++) {
            if (!Character.isLetterOrDigit(test.charAt(i)) && test.charAt(i) != '_') {
                return false;
            }
        }

        return true;
    }

}