// The MIT License (MIT)

//

// Copyright (c) 2019 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 MET12J;

import java.util.Date;

class subClass extends baseClass {

private Date d; // Mutable instance field

protected subClass() {

this.d = new Date();

}

// The class SubClass overrides the protected finalize() method

// and performs cleanup activities.

@Override

protected void finalize() throws Throwable {

System.out.println("Subclass finalize!"); //$NON-NLS-1$

try {

// Cleanup resources

this.d = null;

} finally {

// Subsequently, it calls super.finalize() to make sure its

// superclass is also finalized.

super.finalize(); // Call BaseClass's finalizer

}

}

@Override

public void doLogic() throws Throwable {

// Any resource allocations made here will persist

// Inconsistent object state

System.out.println(

"This is sub-class! The date object is: " + this.d);

// 'd' is already null

}

@SuppressWarnings("deprecation")

public static void main(String[] args) {

try {

baseClass bc = new subClass();

// todo: this needs to be fixed

// Artificially simulate finalization (do not do this)

System.runFinalization();

// System.runFinalizersOnExit(true);

} catch (Throwable t) {

// Handle error

}

}

}