Exam 4: Decision Structures

All it takes for an OR expression to be true is for one of the subexpressions to be true.

What will be displayed after the following statements are executed? Int hours = 30; Double pay, payRate = 10.00; Pay = hours <= 40 ? hours * payRate : hours * payRate * 2.0; System.out.println(pay);

What will be displayed when the following code is executed? Double x = 45678.259; DecimalFormat formatter = new DecimalFormat("#,###,##0.00"); JOptionPane.showMessageDialog(null,formatter.format(x));

What will be displayed when the following code is executed? Double x = 45678.259; DecimalFormat formatter = new DecimalFormat("#,##0.0"); JOptionPane.showMessageDialog(null,formatter.format(x));

What will be the values of ans, x, and y after the following statements are executed? Int ans = 35, x = 50, y = 50; If (x >= y) { Ans = x + 10; X -=y; } Else { Ans = y + 10; Y += x; }

Which of the following expressions could be used to perform a case-insensitive comparison of two String objects named str1 and str2?

Which of the following expressions determines whether the char variable chrA is not equal to the letter 'A'?

A ________ is a boolean variable that signals when some condition exists in the program.

Which of the following strings could be passed to the DecimalFormat constructor to display 12.78 as 012.8?

If str1 and str2 are both String objects, which of the following expressions will correctly determine whether or not they are equal?

The if-else statement will execute one group of statements if its boolean expression is true, or another group if its boolean expression is false.

An important style rule you should adopt for writing if statements is to write the conditionally executed statement on the line after the if statement.

Which of the following strings could be passed to the DecimalFormat constructor to display 12.78 as 12.8%?

Which of the following expressions will determine whether x is less than or equal to y?

When testing for character values, the switch statement does not test for the case of the character.

The ________ statement is used to create a decision structure, which allows a program to have more than one path of execution.

When a character is stored in memory, it is actually the ________ that is stored.

In a switch statement, if two different values for the CaseExpression would result in the same code being executed, you must have two copies of the code, one after each CaseExpression.

What will be displayed when the following code is executed? Int y = 10; If (y == 10 { Int x = 30; X += y; System.out.println(x); }

What would be the value of discountRate after the following statements are executed? Double discountRate = 0.0; Int purchase = 1250 Char cust = 'N'; If (purchase > 1000 If (cust == 'Y') DiscountRate = 0.05; Else DiscountRate = 0.04; Else if (purchase > 750) If (cust == 'Y') DiscountRate = 0.04; Else DiscountRate = 0.03; Else DiscountRate = 0.0;