Answer Posted / raja mallela

The main advantage of overloading and overriding is,the programmer no need to worry about remembering different method names and this concepts provides dynamic memory allocations also.

Explain the difference between jdk, jre, and jvm?

1083

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Is Java a dying language?

1133

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What are meta-annotations?

1043

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How do you start a new line in java?

1036

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Explain the difference between collection api and stream api in java8?

1022

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Explain about method local inner classes or local inner classes in java?

1071

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What happens if an exception is not handled in a program?

1152

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Why string objects are immutable in java?

1086

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What is the string function?

1004

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Make a data structure and implement an algorithm to print all the files in a directory. (The root directory can have sub-directories too.)

1381

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What is function declaration?

1024

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Is java 11 paid version?

1046

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What is the purpose of stub and skeleton?

1078

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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)

3032

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Do you know why doesn't the java library use a randomized version of quicksort?

994

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