ICS 111, Introduction to Computer Science
Lab 4 - String Methods - September 11
Some String methods you will probably use:
For more info on the above String methods, visit Blanca's web site or the Java API.
Instructions:
Note: The login / password that you signed up for is for using the computers in the lab. This user name / password is only for gaining access to the lab computers, and has nothing to do with logging into UH UNIX. Also, be careful and make sure that you logout from the computers when you leave the lab or other persons may see your stuff or use your account to do "bad" things.
To receive credit for this lab assignment, you must be finished by
Thursday, September 11, at 11:59 p.m. After this time you will not receive any credit. Future lab assignments will be due by 11:59 p.m. on the day of the lab assignment.1. Login to UNIX (Secure Shell in Windows)
- If you're at home, a good program to use to connect to UNIX
is Putty (click here to download).
The putty program is executable and doesn't need to be installed.
- Host name is: uhunix2.its.hawaii.edu
- Your user name is the first part of your UH e-mail address.
If your UH email address is 'frank@hawaii.edu', your user name would be 'frank'.
Your password is the same as your e-mail password.
2. Create and edit a file called 'LabX.java' (substitute the lab number for X- where is the number of the lab- such as 'Lab1.java') in Pico (Getting Started with Pico), then compile and run the program.
Do the following:
- Given the following Strings:
- String sJava = "ICS111, introduction to JAVA"; //note the space between the comma and the i.
- String sHello = "hello my friend"; //note the spaces.
- Use these Strings to print the following to the screen:
- print the length of the String sJava
- print the length of the String sHello
- change all the letters "o" from the String sJava to the number 0, and print the String to the screen.
- Using only the given Strings (sJava and sHello), build and print "Hello my Java ICS111" (note that the H is a capital letter, and note that JAVA is not all capital letters)
- Before you submit your code, make sure that your code is formatted cleanly. Every time you open a new {, you should indent everything two spaces underneath it. For example:
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World!");
}
}
3. Get into Pine (Getting Started with Pine, PDF)
4. Attach the file to an e-mail (See pages 11-12 in Getting Started with Pine, PDF)
5. Send the e-mail / file to the ics111-lab@hawaii.edu account.
6. Check the webpage to make sure that the e-mail arrived. Note that this will be sent to the ICS 111 lab address (ics111-lab@hawaii.edu). This one is different from the ics111-homework@hawaii.edu. There are two different ones so we can have homework assignments and lab assignments separate.
Here are the URLs:
http://www2.hawaii.edu/~tp_200/bmf/ics111-homework.html
http://www2.hawaii.edu/~tp_200/bmf/ics111-lab.html
7. Once I (TA) get the e-mail in my account AND I can verify it on the web, you will receive your lab participation point. For grading policies on your lab, click here...
* Some may argue that it is easier to do this from WebMail. If you e-mail your homework from WebMail, it means that you're not positive that it runs / works properly in UNIX. This could result in point deduction if your stuff doesn't work properly.
Link to the Java API - to look up any methods of any class you would like to use.
Link to the Java Coding Standard - to look up Java code formatting rules.