Lab Assignments:

The lab this lesson introduces students to String objects and String processing. By the end of this lab, students should be able to :

Use methods of the String class to examine String objects

Use methods of the String class to use the content of existing Strings to create new Strings

Complete the programs in the following items elsewhere in this Lesson.

Programming Lab 4B

Zip your Java source file(s) and attach them to the dropbox elsewhere in this folder.

Textbook Resources

Textbook Resources

Attached Files:

04slide_accessible.pptx 04slide_accessible.pptx - Alternative Formats (1.773 MB)

Attached are the slides provided by the textbook

Programming Lab 4B : String Play

Programming Lab 4B : String Play

Attached Files:

StringPlay Sample Output (1.259 KB)

Note: sample output from my solution is in the attached text file.

Write a program using Scanner and its nextLine method. The following is an example of how to use nextLine

Scanner kybd = new Scanner(System.in);

System.out.println("Enter a line of text");

String aLine = kybd.nextLine();

If the user's input is shorter than 7 characters, print the message "The input is too short" and do no further processing. If the user's input is 7 characters or longer, perform the following operations.

Print either "the original String has no leading or trailing whitespace" or "the original String has leading or trailing whitespace." (Hint: the trim method will be a good start, but you'll need more.)

Swap the first two and last five characters of aLine and print the result.

Print aLine in all upper case.

If aLine has an odd number of characters, print "The line has an odd number of characters." Otherwise, print the two middle characters of aLine.

Print the compareTo results of comparing aLine in all lower case with the original aLine. (This will be a number.)

Print whether the first half of aLine is the same as the last half of aLine except for case.

Print aLine with one character removed: The first 'e' 'E' 's' or 'S'.

Note: treat each of these steps as an independent action operating on the original input. So if the original input was

kilroy was here, still waiting for godot

swapping the first two and last five characters would print

godotlroy was here, still waiting for ki

and printing the input in all upper case would result in

KILROY WAS HERE, STILL WAITING FOR GODOT

You may use ONLY String's indexOf, charAt, length, compareTo, toUpperCase, toLowerCase, trim, equals, equalsIgnoreCase and substring methods.

Grading Elements

Program checks the length of user input. If it is too short, the program prints a message. If it is sufficiently long, the specified operations are performed.

Program always uses the original input for each manipulation

Program uses only the specified String methods for manipulations

Program prints whether the String has leading or trailing whitespace

Program tests for any whitespace, not just spaces

Program swaps the first two and last five characters

Program prints the input in upper case

Program prints either that the input has a odd length, or prints the two middle characters

Program prints the results of String's compareTo method on the original input and the original input converted to lower case

Program compares the first half and last half of the input, ignoring case

Program prints the original input with the first 'e' 'E' 's' or 'S' removed