JAVA EE: Java Tutorial : Java how to unreference an Object

Wednesday, 2 December 2015

Java Tutorial : Java how to unreference an Object

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https://www.youtube.com/watch?v=HZpOJzSfws0&list=UUhwKlOVR041tngjerWxVccw

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Java Tutorial : Java how to unreference an Object

Student.java

public class Student
{

    String name;
    int age;

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

}

StudentTest.java

public class StudentTest
{

    public static void main(String[] args)
    {
        Student johnReferenceVariable = new Student("John", 25);
        johnReferenceVariable = null; // now the object referred by
                                        // johnReferenceVariable is available
                                        // for garbage collection

        Student ref1 = new Student("Juli", 25);
        Student ref2 = new Student("Dave", 29);
        ref1 = ref2; // now the first object referred by ref1 is available for
                        // garbage collection.

        new Student("Peter", 28);
        
    }

}