//The MIT License (MIT)

//

//Copyright (c) 2020 Robert C. Seacord

//

//Permission is hereby granted, free of charge, to any person obtaining a copy

//of this software and associated documentation files (the "Software"), to deal

//in the Software without restriction, including without limitation the rights

//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

//copies of the Software, and to permit persons to whom the Software is

//furnished to do so, subject to the following conditions:

//

//The above copyright notice and this permission notice shall be included in all

//copies or substantial portions of the Software.

//

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

//SOFTWARE.

package err06j;

import java.io.IOException;

public class NewInstance {

private static Throwable throwable;

private NewInstance() throws Throwable {

throw throwable;

}

private static synchronized void undeclaredThrow(Throwable throwable) {

// These exceptions should not be passed

if (throwable instanceof IllegalAccessException || throwable instanceof InstantiationException) {

// Unchecked, no declaration required

throw new IllegalArgumentException();

}

NewInstance.throwable = throwable;

try {

NewInstance.class.newInstance();

}

catch (ReflectiveOperationException e) {

e.printStackTrace();

} finally { // Avoid memory leak

NewInstance.throwable = null;

}

}

public static void main(String[] args) {

// No declared checked exceptions

try {

NewInstance.undeclaredThrow(new Exception("Generic Exception"));

} catch (Exception e) {

e.printStackTrace();

}

try {

NewInstance.undeclaredThrow(new IOException("IOException"));

} catch (Exception e) {

e.printStackTrace();

}

} // end main

} // end class newInstance

// private static synchronized void undeclaredThrow(Throwable throwable) {

// // These exceptions should not be passed

// if (throwable instanceof IllegalAccessException || throwable instanceof InstantiationException) {

// // Unchecked, no declaration required

// throw new IllegalArgumentException();

// }

//

// NewInstance.throwable = throwable;

// try {

// // NewInstance.class.newInstance();

// NewInstance.class.getDeclaredConstructor().newInstance();

// }

// catch (ReflectiveOperationException e) {

// e.printStackTrace();

// } finally { // Avoid memory leak

// NewInstance.throwable = null;

// }

// }