creation: 7/30/99

Fill in the Blanks

Instructions: This is an ungraded fill-in-the-blank exercise. Each question consists of a sentence with one or two words left out. A button represents the missing word(s). For each question, think of the word or phrase that should fill each blank, then click on the buttons to see if you are correct. No grade is calculated for this exercise.

This exercise reviews simple Java input and output. Much of this is detailed and hard to remember, so don't expect to get every question correct.

5. Examine the following program, which reads in a line of text and then writes it to the monitor. Fill in blanks.

import  ;   
class Echo
{
  public static void main (String[] args) 
  {
    Scanner scan =  new  ( System.in );   

    String inData;

    System.out.println("Enter the data:");
    inData = scan.

    System.out.println("You entered:" + inData );
  }
}

9. Examine the following program, which reads in a number and writes its square to the monitor. Fill in blanks.

 java.io.* ;  
class EchoSquare
{  
  public static void main (String[] args)
  {
    Scanner scan = new Scanner ( );  
    int num, square;                      // declaration of two int variables
    System.out.println("Enter an integer:");        
    num    = scan.();  
    square = num * num ;                     // compute the square
    System.out.println("The square of " + num + " is " + square );  
  }
}

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