Chapter 4

   

Java™ 2 Primer Plus
By Steven Haines, Steve Potts

Table of Contents
Appendix C.  Answers to Review Questions


A1:

The general form of the if statement is

 if( boolean_value ) {      // Execute these statements  } 

A2:

If the boolean value inside the if statement evaluates to false then an else block can be executed:

 if( boolean_value ) {      // boolean is true: Execute these statements  }  else {      // boolean is false: Execute these statements  } 

A3:

There is not a limit to the number of else if statements that can follow an if statement.

A4:

The switch statement only evaluates int variables or variables that can be converted to int.

A5:

The do-while statement assures that the body of the loop is evaluated at least once.

A6:

An infinite loop is a loop that does not terminate; its loop control variable never evaluates to a value that allows the loop to exit. For example:

 int a = 10;  while( a > 0 ) {     // Never change the value of a  } 

A7:

The most popular type of loop for iterating over a variable or set of variables is the for loop.

A8:

You can skip the statements in the current iteration of a loop by issuing the continue statement.

A9:

You can stop executing the statements in a loop and continue at the first line following the loop by issuing the break statement.

A10:

You can break out of a multiple nested loop by defining a label and then breaking to the label, for example:

 outer:  for( int a=0; a<10; a++ ) {     for( int b=0; b<10; b++ ) {        if( a * b == 25 ) break outer;     }  } 


       
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    Java 2 Primer Plus
    Java 2 Primer Plus
    ISBN: 0672324156
    EAN: 2147483647
    Year: 2001
    Pages: 332

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