Evaluate Code Segments that Iterate Over an ArrayList

Need Help? Check out these resources!

• Learn: Constructing an ArrayList Object
• Learn: Adding Values to an ArrayList Object
• Learn: Accessing and Removing Values from an ArrayList Object
• Learn: Changing Values in an ArrayList Object
• Learn: Analyzing an ArrayList Object
• Learn: Iterating Over an ArrayList Object

Evaluating Expressions

	Grab a Piece of Paper!
	Evaluate each expression. Verify your answer by running the code in the Java Playground.

Practice 1: Animal List

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.
• Modify the code segment to print the name of each animal. Run the code to test.
• Modify the code to change the names of the animals to be all uppercase. Run the code to test.

Practice 2: XYZ Practice

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.

Practice 3: Sum the Values

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.
• Modify the code to print a running total as each value is added to sum. It should print 2.5 and then 6.5 and then 12. Run your code to test.

Practice 4: Reverse Order

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.

Practice 5: Update Numbers

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.

Practice 6: Even or Odd

• Trace the provide code segment and predict the output.
• Verify your prediction is correct by running the code in the Java Playground.
• Modify the code so that only odd values are printed. Verify your code is correct by running it.