Evaluate Code Segments that Iterate Over an ArrayList

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.