Programmer's Guide to Java Certification

Exam Objectives Write code using if and switch statements, and identify legal argument types for these statements.Write code using all forms of loops, including labeled and...

Overview of Control Flow Statements Control flow statements govern the flow of control in a program during execution, that is, the order in which statements are...

Java provides selection statements that allow the program to choose between alternative actions during execution. The choice is based on criteria specified in the selection...

Review Questions 5.1 What will be the result of attempting to compile and run the following class? public class IfTest { public static void main(String[]...

Iteration Statements Loops allow a block of statements to be executed repeatedly (i.e., iterated). A boolean condition (called the loop condition) is commonly used to determine...

Java provides six language constructs for transferring control in a program: breakcontinuereturntry-catch-finallythrowassert This section discusses the first three statements, and the remaining statements are discussed in subsequent...

5.5 What will be the result of attempting to compile and run the following code? class MyClass { public static void main(String[] args) {...

An exception in Java is a signal that indicates the occurrence of some important or unexpected condition during execution. For example, a requested file cannot...

Exception Types Exceptions in Java are objects. All exceptions are derived from the java.lang. Throwable class. Figure shows a partial hierarchy of classes derived from the...

try, catch, and finally The mechanism for handling execeptions is embedded in the try-catch-finally construct, which has the following general form: try {...

throw Earlier examples in this chapter have shown how an exception is thrown implicitly during execution. A program can explicitly throw an exception using the...

throws A throws clause can be specified in the method protoype. someMethod()    throws <ExceptionType1>, <ExceptionType2>,, <ExceptionTypen> { } Each <ExceptionTypei> declares a checked exception. The compiler enforces that the checked...

5.15 Which digits, and in which order, will be printed when the following program is run? public class MyClass { public static void main(String[]...

in Java can be used to document and validate assumptions made about the state of the program at designated locations in the code. Each assertion...

Review Questions 5.24 Assuming assertions are enabled, which of these assertion statements will throw an error? Select the two correct answers. assert true : true;assert true : false;assert false...

Chapter Summary The following information was included in this chapter: explanation of the selection statements: if, if-else, switch explanation of the iteration statements: for, while, do-while explanation of the...

Programming Exercises 5.1 Create different versions of a program that finds all the primes below 100. Create one version that uses only the for loop (i.e., no...