Java Chapter 3
Which of the following is the not equal operator?
!=
Which of the following is the correct boolean expression to test for: int x being a value between, but not including, 500 and 650, or int y not equal to 1000?
((x > 500 && x < 650) || (y != 1000))
All it takes for an AND expression to be true is for one of the subexpressions to be true.
False
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.
False
Programs never need more than one path of execution.
False
A local variable's scope always ends at the closing brace of the block of code in which it is declared.
True
All it takes for an OR expression to be true is for one of the subexpressions to be true.
True
If the expression on the left side of the && operator is false, the expression on the right side will not be checked.
True
________ works like this: If the expression on the left side of the && operator is false, the expression the right side will not be checked.
short-circuit evaluation
Which of the following expressions could be used to perform a case-insensitive comparison of two String objects named str1 and str2?
str1.equalsIgnoreCase(str2)
A flag may have the values ________.
true or false
An expression tested by an if statement must evaluate to ________.
true or false
The boolean expression in an if statement must evaluate to ________.
true or false
When testing for character values, the switch statement does not test for the case of the character.
False
When two strings are compared using the String class's compareTo method, the comparison is not case sensitive.
False
________ operators are used to determine whether a specific relationship exists between two values.
Relational
The String.format method works exactly like the System.out.printf method, except that it does not display the formatted string on the screen.
True
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.
True