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ANS: a. Two forward slashes ( // ). ANS: a. my Value (Identifiers may not contain blanks). ANS: d. An extra blank line. ANS: c. System.out.println( “Hello world!” ); Compiling and Executing Your First Java Application ANS: b. javac Welcome.java […]

ANS: d. In use today are more than a trillion general-purpose computers and trillions more Java-enabled cellphones, smartphones and other handheld devices. ANS: c. Enterprise Edition. Section 1.2 Computers: Hardware and Software ANS: c. Unfortunately, silicon is expensive, so it […]

ANS: d. type. ANS: c. extensible. Section 3.2.1 Account Class with an Instance Variable, a set Method and a get Method ANS: a. Each class declaration that begins with the access modifier private must be stored in a file that […]

ANS: d. type. ANS: c. extensible. Section 3.2.1 Account Class with an Instance Variable, a set Method and a get Method ANS: a. Each class declaration that begins with the access modifier private must be stored in a file that […]

ANS: d. the arguments to the method. ANS: d. performs a single, well-defined task. Section 6.3 static Methods, static Fields and Class Math ANS: b. the return type ANS: c. Math.sqrt(900); ANS: c. parseInt ANS: d. All of the above. […]

Ans: b. A, B, D. © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson Education, Inc. Ans: c. 9. Chapter 7 Arrays and ArrayLists Section 7.1 Introduction 7.1 Q1: Arrays are ________. a. variable-length entities b. fixed-length entities c. […]

ANS: b. format. ANS: c: Clients are usually involved in a class’s implementation. Section 8.3 Controlling Access to Members ANS: c. Variables (or fields). ANS: a. Methods and instance variables can both be either public or private. Section 8.4: Referring […]

ANS: d. is-a relationship Section 9.2 Superclasses and Subclasses ANS: c. Sailboat/Tugboat. A Sailboat is not a superclass for Tugboats. Both sailboat and tugboats would be subclasses of Boat. ANS: c. Objects of a subclass can be treated like objects […]

ANS: d. All of the above. Section 4.4 Control Structures ANS: b. Shorter ANS: d. Declaration structure. Sequence Structure in Java ANS: c. Rectangle with left and right sides replaced with arcs curving outward. © Copyright 1992-2015 by Deitel & […]

Ans: c. A program to compute a 5% savings account interest for a variety of clients. Because there is only one kind of calculation, there is no need for polymorphism. © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson […]

Ans: b. thrown. Ans: d. Instructions on handling the exception. © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson Education, Inc. Ans: a. It specifies the point at which the exception must be handled. Section 11.3 Example: Handling Chapter […]

Ans: c. Menu bar. (No questions.) JOptionPane Ans: d. showInputDialog. © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson Education, Inc. Chapter 12: GUI Components: Part 1 12.1 Introduction 12.1 Q1: Which of the following is not a GUI […]

Ans: a. drawing is performed differently on every platform that supports Java. A subclass of Graphics must be created that uses the drawing capabilities of the current platform. Ans: b. C, D, E. Section 13.3 Color Control © Copyright 1992-2015 […]

ANS: d. C and D. ANS: b. is a string literal. Section 14.3 Class String Section 14.3.1 String Constructors ANS: b. int arrays. ANS: c. Cannot be changed. Section 14.3.2 String Methods length, charAt and getChars ANS: a. The String […]

ANS: d. Formatter ANS: c. They redirect the standard input, output and error streams. ANS: b. byte-based streams Directory Information © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson Education, Inc. Chapter 15: Files, Streams and Object Serialization 15.1 […]

ANS: d. The number of pages in a book. Section 16.2 Collections Overview ANS: c. Collections discourage software reuse because they are non-portable. Actually, they encourage software reuse because they are portable. ANS: a. java.util. Section 16.3 Type-Wrapper Classes ANS: […]

ANS:c. Lambda. ANS: b. Using a loop to iterate over a collection of elements is known as external iteration and requires accessing the elements sequentially. Such iteration also requires mutable variables. External iteration is easier to parallelize. Actually, internal iteration […]

Ans: a. base case(s). Ans: c. the original call to the method is still active. Ans: c. Both a and b. © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson Education, Inc. Chapter 18: Recursion 18.1 Introduction 18.1 Q1: […]

ANS: d. All of the above. Section 19.2 Linear Search ANS: b. 10. Efficiency of Linear Search ANS: b. Variable run time. ANS: c. O(n). Section 19.3 Big O Notation Ans: c. an algorithm’s efficiency in terms of the work […]

ANS: a. int. Section 5.3 for Repetition Statement ANS: c. Both (a) and (b) are true. © Copyright 1992-2015 by Deitel & Associates, Inc. and Pearson Education, Inc. Chapter 5 Control Statements: Part 2 Section 5.2 Essentials of Counter-Controlled Repetition […]

ANS: c. Generic methods. ANS: a. compile-time type safety. Section 20.2 Motivation for Generic Methods ANS: c. Both a) and b). Section 20.3 Generic Methods: Implementation and Compile– Time Translation ANS: b. angle brackets (< and >). ANS: b. Each […]

ANS: c. Insertions and deletions are made only at one end of a queue, its tail. Actually, in a queue, insertions are made at the tail and deletions are made at the head. Section 21.2 Self-Referential Classes ANS: d. Self-referential. […]

ANS: b. in parallel ANS: b. Concurrency is a subset of parallelism. Actually, parallelism is a subset of concurrency. ANS: c. Multithreading can increase performance only on multi-core systems. Actually, multithreading can also increase performance on single-processor systems—when one thread […]

ANS: b. JDBC. ANS: b. Allows developers to change the underlying database without modifying the Java code. Section 24.2 Relational Databases ANS: b. query. ANS: a. Identifies each row of a table. Section 24.3 A books Database ANS: a. Foreign […]

ANS: d. Java’s GUI, graphics and multimedia API of the future is Swing. Actually, Java’s GUI, graphics and multimedia API of the future is JavaFX. Section 25.2 JavaFX Scene Builder and the NetBeans IDE ANS: c. The FXML code is […]