Java Class New Instance newInstance(Class clazz)

Description

new Instance

License

Apache License

Declaration

public static Object newInstance(Class clazz) 

Method Source Code

//package com.java2s;
/*//from   w  ww  . j  av a2 s.  co  m
 * Copyright 2004-2012 the Seasar Foundation and the Others.
 *
 * 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.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

public class Main {
    public static Object newInstance(Class clazz) {
        if (clazz == null) {
            throw new IllegalArgumentException();
        }
        try {
            return clazz.newInstance();
        } catch (InstantiationException e) {
            throw new RuntimeException(e);
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }

    public static Object newInstance(Constructor constructor, Object[] argValues) {
        if (constructor == null || argValues == null
                || constructor.getParameterTypes().length != argValues.length) {
            throw new IllegalArgumentException();
        }
        try {
            return constructor.newInstance(argValues);
        } catch (InstantiationException e) {
            throw new RuntimeException(e);
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        } catch (InvocationTargetException e) {
            throw new RuntimeException(e);
        }
    }
}

Related

1. newInstance()
2. newInstance(Class clazz)
3. newInstance(Class clazz)
4. newInstance(Class clazz)
5. newInstance(Class clazzName)
6. newInstance(Class cls)
7. newInstance(Class cls)