How GC (Garbage Collector) knows the objects reference is
unused.Whether GC removes the unused object Parmanently or
it maintains something.
Answers were Sorted based on User's Feedback
Answer / devarathnam.c, kotagudibanda,k
Hi,
The Garbage Collector(GC)will be always under the control
of JVM, So JVM periodically runs the GC. It uses "sweep"
and "mark" algorithms to identify the unused objects in the
application. You don't bother about GC, JVM will take of it.
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / balamurugan
it checks whenever we will not used the objects in our
program then jvm checked with forward referenceduse help of
heap memory. then gb removes the un used objects
| Is This Answer Correct ? | 1 Yes | 0 No |
What is the disadvantage of synchronization?
What is the difference between the boolean & operator and the && operator in java programming?
What is the use of runnable interface?
Is empty string in java?
What are listeners in java and explain ?
3.2 Consider the following class: public class Point { protected int x, y; public Point(int xx, int yy) { x = xx; y = yy; } public Point() { this(0, 0); } public int getx() { return x; } public int gety() { return y; } public String toString() { return "("+x+", "+y+")"; } } Say you wanted to define a rectangle class that stored its top left corner and its height and width as fields. 3.2.1 Why would it be wrong to make Rectangle inherit from Point (where in fact it would inherit the x and y coordinates for its top left corner and you could just add the height and width as additional fields)? (1) 8 Now consider the following skeleton of the Rectangle class: public class Rectangle { private Point topLeft; private int height, width; public Rectangle(Point tl, int h, int w) { topLeft = tl; height = h; width = w; } public Rectangle() { this(new Point(), 0, 0); } // methods come here } 3.2.2 Explain the no-argument constructor of the Rectangle class given above. 3.2.3 Write methods for the Rectangle class to do the following: • a toString() method that returns a string of the format "top left = (x, y); height = h; width = w " where x, y, h and w are the appropriate integer values. • an above() method that tests whether one rectangle is completely above another (i.e. all y values of the one rectangle are greater than all y values of the other). For example, with the following declarations Rectangle r1 = new Rectangle(); Rectangle r2 = new Rectangle(new Point(2,2), 1, 4); the expression r2.above(r1) should give true, and r2.above (r2) should give false. (You can assume that the height of a rectangle is never negative.) (2) (5)
Write program to print Hello World and print each character address in that string and print how many times each character is in that string? Ex: H: 0 & 1 e:1 & 1 l :2,3,8 & 3 o:4,6 & 2 w:5 & 1 r: 7 & 1 d 9 & 1
What are annotations in java?
What do you mean by platform independence of Java?
Which is the best approach for creating thread ?
How does thread synchronization occurs inside a monitor? What levels of synchronization can you apply?
Can an integer be null java?