is Array for String representation - Java java.lang

Java examples for java.lang:String Array

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Description

is Array for String representation

Demo Code

/*/*from   ww  w.  jav a 2 s  .c  om*/
 * Copyright (c) 2008-2016 Haulmont.
 *
 * 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.
 *
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String type = "java2s.com";
        System.out.println(isArray(type));
    }

    public static boolean isArray(String type) {
        return type != null
                && (type.startsWith("[") && type.length() >= 2
                        && getArrayType(type) != null || type
                            .endsWith("[]"));
    }

    public static Class getArrayType(String type) {
        if (type.endsWith("[]")) {
            try {
                return Class.forName(type.substring(0, type.length() - 2));
            } catch (ClassNotFoundException e) {
                throw new RuntimeException("Wrong array type");
            }
        }
        switch (type.substring(0, 2)) {
        case "[Z":
            return boolean.class;
        case "[B":
            return byte.class;
        case "[S":
            return short.class;
        case "[I":
            return int.class;
        case "[J":
            return long.class;
        case "[F":
            return float.class;
        case "[D":
            return double.class;
        case "[C":
            return char.class;
        case "[L":
            return Object.class; // any non-primitives(Object)
        }
        throw new RuntimeException("Wrong array type");
    }
}

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