Signature _____________________
CSE 11
Name ________________________
Quiz 1
cs11f ____
Fall 2008
Student ID ____________________
This quiz is to be taken by yourself with closed books, closed notes, no calculators.
(Partial) Operator Precedence Table
Operators Associativity
* / % left to right
+ - left to right
< <= > >= left to right
== != left to right
&& left to right
|| left to right
= right to left
1) Which of the following are not valid Java identifiers? (Circle your answer(s).)
3rdLine Ugly_Betty one/two Int
nine2five lower-half Seven%Solution Ex2_3_4
2) Using the operator precedence table above, evaluate each expression and state what gets printed. Remember
short-circuit evaluation with && and ||.
int x = -2;
int y = -1;
int z = 4;
boolean b = x + y < z || 4 * y + z > x && x > y;
System.out.print( "b = " + b ); ____________________
b = (x + y < z || 4 * y + z > x) && x > y;
System.out.print( "b = " + b ); ____________________
x = z + 6 % 4 + y * 2;
System.out.print( "x = " + x ); ____________________
3) What color is described by the object
new Color( 255, 0, 0 ) ________________
Which of the following would be considered light gray? (Circle your answer.)
a) new Color( 200, 200, 200 ); b) new Color( 125, 125, 125 );
c) new Color( 55, 55, 55 );
(Continued on other side)
