Repeat Exercise 5 in Chapter 7, but use an instance of ArrayList instead of an array.
What will be an ideal response?
See the code in CharacterFrequency.java.
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Which of the following statements is false?
a. Java makes concurrency available to you through the language and APIs. b. Concurrency is a subset of parallelism. c. Today’s multi-core computers have multiple processors that can perform tasks in parallel. d. Java programs can have multiple threads of execution, where each thread has its own method-call stack and program counter, allowing it to execute concurrently with other threads. This capability is called multithreading.
When you log onto UNIX, you must enter your login name and a password. For security reasons, the __________ is never displayed.
a. login name b. password c. both are displayed d. neither is displayed
Which of the following is not a web design recommended practice?
a. design your site to be easy to navigate b. use dark text on dark backgrounds c. design your pages to load quickly d. limit the use of animated items
Identify the letter of the choice that best matches the phrase or definition.
A. A device with a built-in processor B. Installed on a motherboard to connect a server to the Internet C. Used to tabulate census information for the U.S. government D. Transfers data around a network based on user requests E. Used primarily for scientific applications