Java Class New Instance newInstance(Class clazz)

Description

Attempts to create and return a new instance of given class by invoking default constructor.

License

Apache License

Parameter

Parameter	Description
clazz	The class to be instantiated.

Return

A new instance of the class.

Declaration

public static Object newInstance(Class<?> clazz) 

Method Source Code

//package com.java2s;
/*//from   ww  w  .j  a va2  s  .  c  o m
 * Copyright 2014 the original author or authors.
 *
 * 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.
 */

public class Main {
    /**
     * Attempts to create and return a new instance of given class by invoking default constructor.
     * Checked exceptions will be converted into runtime exceptions.
     *
     * @param clazz The class to be instantiated.
     * @return A new instance of the class.
     */
    public static Object newInstance(Class<?> clazz) {
        try {
            return clazz.newInstance();
        } catch (InstantiationException | IllegalAccessException e) {
            throw new RuntimeException(String
                    .format("Failed to create an instance of %s by invoking " + "default constructor.", clazz), e);
        }
    }
}

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