Java Scanner Usage getInput(Scanner in, String message, boolean allowNull)

Description

get Input

License

Apache License

Declaration

public static String getInput(Scanner in, String message, boolean allowNull) throws Exception 

Method Source Code

//package com.java2s;
/*/*from   w w w.  ja v  a2  s. c  o m*/
 * Copyright Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags and
 * the COPYRIGHT.txt file distributed with this work.
 *
 * 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.util.Scanner;

public class Main {
    public static String getInput(Scanner in, String message) throws Exception {
        return getInput(in, message, false);
    }

    public static String getInput(Scanner in, String message, boolean allowNull) throws Exception {
        while (true) {
            System.out.print(message);
            String input = in.nextLine();
            input = input.trim();
            if (input.length() > 1) {
                System.out.println("");
                return input;
            }

            if (allowNull) {
                System.out.println("");
                return null;
            }
        }
    }
}

Related

1. getConstantPoolsFromText(String text)
2. getDirectoryString()
3. getEndLine(String cqlString)
4. getExtensions(Scanner scanner)
5. getFirstInt(String s)
6. getInt()
7. getInt(Scanner sc)
8. getInteger(String parameter)
9. getLines(String str)