Java Tutorial : Java finalize and gc methods

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Java Tutorial : Java finalize and gc methods 

Java Tutorial : Java finalize and gc methods 

Java Tutorial : Java finalize and gc methods 

Student.java

public class Student
{

    String name;
    int age;

    public Student(String name, int age)
    {
        this.name = name;
        this.age = age;
    }

    /*
     * The finalize() method is invoked each time before the object is garbage
     * collected. This method can be used to perform cleanup processing. This
     * method is defined in Object class.
     */
    public void finalize()
    {
        System.out.println(this + "object is garbage collected," + " name :"
                + this.name);

    }

}

StudentTest.java

public class StudentTest
{

    public static void main(String[] args) throws InterruptedException
    {
        Student johnReferenceVariable = new Student("John", 25);
        Student peterReferenceVariable = new Student("Peter", 25);

        /*
         * Now the object referred by johnReferenceVariable is available for
         * garbage collection
         */
        johnReferenceVariable = null;

        /*
         * Now the object referred by peterReferenceVariable is available for
         * garbage collection
         */
        peterReferenceVariable = null;

        /*
         * The gc() method is used to invoke the garbage collector to perform
         * cleanup processing. The gc() is found in System and Runtime classes.
         */

        System.gc();

        Thread.sleep(100);

    }

}

Output

Student@a70d6e2object is garbage collected, name :John
Student@4b729dcobject is garbage collected, name :Peter

Click the below link to download the code:
https://sites.google.com/site/javaee4321/java/GarbageCollectionDemoApp.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/GarbageCollectionDemoApp

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/68054fa19b88e552162495a83ba964283753af15/BasicJava/GarbageCollectionDemoApp/?at=master

See also:

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Java Collection Framework Tutorial

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