Q1.A. Write note on “The class path Environment Variable”?
B. Which are different kinds of source code?
Q2.A. How to create an interface?
B. Why convert an applet to an application?
Q3.A. How to use Media tracker Class.
B. How to use string tokenizer class.
Q4 A. Explain the overview of UDP messaging.
B. Difference between SQL Exception class and SQL
Warning class.
Q5. A. How to create com object in Java?
B. Write short notes on “The properties class”
Q6. A. When object is created and destroyed?
B. Explain the JDB in depth & command line.
C. Write short notes on Web Sites.
The following program reads data (details of students) from
a file named students.txt and
converts it into e-mail addresses. The results are written
to a file named studentemail.txt.
students.txt consists of a number of lines, each containing
the data of a student in colon
delimited format:
Last Name:First Name:Student Number
Each input record is converted to an e-mail address and
written to studentemail.txt in the
following format:
the first character of the last name + the first character
of the first name + the last four digits of
the student number + “@myunisa.ac.za”
import java.io.*;
public class EmailConverter {
public static void main(String[] args) throws IOException {
BufferedReader input = new BufferedReader(new FileReader
("students.txt"));
PrintWriter output = new PrintWriter(new FileWriter
("studentemail.txt"));
String line = input.readLine();
while (line != null) {
// Extract the information for each student
String[] items = line.split(":");
// Generate the email address
String email = "" + items[0].charAt(0) + items[1].charAt(0)
+
items[2].substring(4,8) + "@myunisa.ac.za";
email = email.toLowerCase();
// Output
output.println(email);
line = input.readLine();
}
input.close();
output.close();
}
}
Rewrite the class so that it handles possible errors that
may occur. In particular, it should do the
following:
• It should catch at least three appropriate exceptions
that might occur, and display suitable
messages.
• At this stage, the program will not run correctly if
there is an empty line in the input file.
Change the program so that if an empty line is encountered,
an exception is thrown and the
empty line is ignored. This exception should be handled
with the display of a suitable error
message.
• Before the e-mail address is added to the output file,
check if the student number has 8
digits. If not, throw an InvalidFormatException (which the
program should not handle itself)
21
Hi....
I applied for the post of scientific
officer/Engineer-SB(Programmer).Please post the syllabus and
sample papers.
120
how to deploy tomcatserver to weblogic server?
write d following steps?
74
We are seeing so many videos/audios as many web sited. But
question is these videos or audios are stored in Databases (
Oracle, Mysql, Sybase,... ) or stored any file directory
from there they will give the link for that? Pls explain and
give sample code to achieve this one? Thanks, Seenu.
2. Write a interface "Car" with the following methods
void setName(String)
String getName()
void setColor(String)
String getColor()
void setModel(long)
long getModel()
13
i need connection pooling code.....from
harpreet.your@gmail.com
Question 6 [9]
6.1 In what situations (in general) would you use a
TreeMap? (3)
6.2 In what situations (in general) would you use a HashSet
to store a collection of
values?
22
Difference between DurableSubscription and non-
DurableSubscription?
181
Explain the steps in details to load the server object
dynamically?
252
Describe activation process?
152
I am new to jsf rich faces. I am using rich faces datatable
rich:datatable. On entering the value, values get filtered
in table. Now how can i get the value i selected in
backing bean?
along with your userid / name. ThanQ
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