Answer Posted / rv.nandakishore

The compiler is specific to compile the source code for
specific platform is called Platform Dependent programming
language...


Java is platform independent its have the capability to
compile the source code in specific platform by its platform
specific JVM..

Can we override static methods in java?

797

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Which collection is sorted in java?

779

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What are the pillars of java?

661

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What about anonymous inner classes in java?

777

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What is difference between == equals () and compareto () method?

720

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How to perform selection sort in java?

775

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What's a method in programming?

740

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Can the interface be final?

756

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What are the different collection views provided by maps?

758

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What is a vector in java?

773

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What is a parameter in simple terms?

742

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Can we override final method?

743

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What does the “static” keyword mean? Can you override private or static method in java?

809

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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)

2692

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What is the generic class?

706

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