create Array by length and Class type - Java Collection Framework

Java examples for Collection Framework:Array Length

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Description

create Array by length and Class type

Demo Code

/*//  w ww  . j a  v  a2s.  c om
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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;
import java.lang.reflect.Array;

public class Main {
    public static void main(String[] argv) {
        Class elemType = String.class;
        int length = 42;
        System.out.println(java.util.Arrays.toString(createArray(elemType,
                length)));
    }

    @SuppressWarnings("unchecked")
    private static <E> E[] createArray(Class<E> elemType, int length) {
        return (E[]) Array.newInstance(elemType, length);
    }
}

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