Answer / narayana reddy

throws indicates what type of exception is thrown by
a particular function, where as throw is used to through
user defined exceptions

Answer / archana

throws is to handle exception by the system itself
whereas throw used by the user to handled the exception

Answer / sidd

In case of java if any error occur deuring the exicution
time throw is use to throwing that that into our catch block
for handling and in case of throws if any error
will occur throws can handle that error.

Answer / dani

You can declare multiple exception thrown by method in
throws keyword by separating them in common
e.g. throws IOException, ArrayIndexBoundException etc,

while you can only throw one instance of exception using
throw keyword e.g. throw new IOException("not able to open
connection").

Answer / aravinda reddy

Whenever we want to force an exception then we use throw
keyword,throw keyword can also be used to pass a custom
message to the exception handling module i.e. the message
which we want to be printed. throw we will use at statement
level.

Whereas when we know that a particular exception may be
thrown or to pass a possible exception then we use throws
keyword. Point to note here is that the Java compiler very
well knows about the exceptions thrown by some methods so
it insists us to handle them. Method Level

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)

0 Answers  

What are different data types?

0 Answers  

What is jee6?

0 Answers  

What two classes are used to read data only?

0 Answers   TryTechnicals Pvt Ltd,

What is the difference between @before and @beforeclass annotation?

0 Answers  

What causes memory leak in java?

0 Answers  

Difference between java and javascript

0 Answers  

How to sort elements in a parallel array in java?

0 Answers  

What classes can be used to store arbitrary number of objects ?

1 Answers  

How do you check if two given string are anagrams?

0 Answers  

Can we declare a constructor as final?

0 Answers  

What is a finally block?

0 Answers