Exception handling in Java:

We have seen that input and output may give rise to errors that generate Java exceptions. However, up to now we have not attempted to deal with these exceptions in any way other than terminating the program if something goes wrong.Java's exception handling can be used to deal with potentially serious or unpredictable error conditions, such as a missing data file. In its simplest form, it works like this:

1. When the Java system detects an error, it stops the normal fiow of program execution.
2. A special kind of Java object, known as an exception, is created. This object holds some information about what has gone wrong. There are different kinds of exceptions for different sorts of error conditions.
3. Control is transferred from the part of your program where the error occurred to an exception handler, which deals with the situation.
4. The exception object is available to the exception handler code and can be used to help decide on the appropriate action. The appropriate action may be to attempt to recover from the error condition and continue execution, or it may be best to terminate execution of some or all of the program with a suitable error message.

There are some special terms used in describing exceptions. At the point in the code where the error occurs, we say the code throws an exception. The exception handler catches the exception. In some circumstances, a method must declare an exception: that is, it must state in the method header that it can potentially throw a particular type of exception. The detailed Java syntax for all these activities is given in the next section.

Typical examples of serious errors that could occur within a Java program are as follows: 

• a program tries to read past the end of a data file; 
• a program cannot find a specified input file; 
• a program tries to connect to a website using an invalid address; 
• a program runs out of memory;
• a method tries to access an array element whose index is larger than the upper limit of the array;
• an overfiow condition occurs when the result of some arithmetic operation exceeds the limit for the primitive data types involved;
• a program expecting to read a file of integers finds a string value in the file;
• a method expecting an object reference encounters a null reference instead.

Appropriate use of exceptions can overcome some of the problems associated with such situations.

Java Assignment Help - Java Homework Help

Struggling with java programming language? Are you not finding solution for your Exception handling in Java homework and assignments? Live Exception handling in Java experts are working for students by solving their doubts & questions during their course studies and training program. We at Expertsmind.com offer Exception handling in Java homework help, java assignment help and Exception handling in Java projects help anytime from anywhere for 24x7 hours. Computer science programming assignments help making life easy for students.

Why Expertsmind for assignment help

1. Higher degree holder and experienced experts network
2. Punctuality and responsibility of work
3. Quality solution with 100% plagiarism free answers
4. Time on Delivery
5. Privacy of information and details
6. Excellence in solving java programming language queries in excels and word format.
7. Best tutoring assistance 24x7 hours