Lab 6: Loops and Conditionals in Java

In this lab, you will practice using conditional statements and looping constructs in Java.

Problem 1: ReadPrint

Implement a class named ReadPrint that does the following:

• In your main read a number from keyboard and call generateList with the number.


• Your generateList takes one integer parameter and generates a list as follows:
  
  
  • If the integer is positive, it prints from 0 all the way to that number. For example, if the number is 5, it generates the output list: 0, 1, 2, 3, 4, 5.
  
  
  • If the integer is negative, it prints from that number all the way to 0. For example, if the number is -4, it generates the output list: -4, -3, -2, -1, 0

Note that I did not even mention that the class ReadPrint must be in a file named ReadPrint.java because it would be obvious by now. I won't mention that any more in the future.

Problem 2: SkipPrint

Implement a class named SkipPrint that does the following:

• In your main read a positive integer from keyboard and call skipPrint with the number. If the number is not positive, your program should terminate by indicating that the number was not positive. If positive, then the main calls skipPrint with the number as an argument.


• Your skipPrint takes one integer parameter and prints from 0 up to the number but by skipping the multiples of 3 or 5. For example, if the number was 13, your skipPrint should print: 0, 1, 2, 4, 7, 8, 11, 13. Note that 0 may be considered a multiple of 3 or 5, but I want your function to still treat it as an exception.

Problem 3: Using Conditionals with Strings

Create a Java class named StringSeparation that takes in a sentence as input from the user. The program should then go through the input and pull out the second word in the sentence and print that word. For this problem, assume each word has exactly one space between every other word and the user always enters at least 3 words.

For example if given:

        This example sentence is entered by the user
  

It would print:

        The second word is: example

Use the charAt(index) and substring() String methods to solve this problem.