— Scott McNealy, Sun Microsystems Chairman, President and ceo

The Java Virtual Machine
The Compiler

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20
 
chapter 1
if (x == 1) {
System.out.print(“d”);
x = x - 1;
}
if (x == 2) {
System.out.print(“b c”);
}
if (x > 2) {
System.out.print(“a”);
}
int x = 3;
x = x - 1;
System.out.print(“-”);
while (x > 0) {
class Shuffl e1 {
public static void main(String [] args) {
File Edit Window Help Sleep
% java Shuffle1
a-b c-d
Exercise
Code Magnets
A working Java program is all scrambled up 
on the fridge. Can you rearrange the code 
snippets to make a working Java program 
that produces the output listed below?
Some of the curly braces fell on the floor 
and they were too small to pick up, so feel 
free to add as many of those as you need!
Output:
exercise: 
Code Magnets

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you are here
4
dive In 
A Quick Dip
21
C
class Exercise1b {
int x = 5;
while ( x > 1 ) {
x = x - 1;
if ( x < 3) {
System.out.println(“small x”);
}
}
}
A
class Exercise1b {
public static void main(String [] args) {
int x = 1;
while ( x < 10 ) {
if ( x > 3) {
System.out.println(“big x”);
}
}
}
}
B
public static void main(String [] args) {
int x = 5;
while ( x > 1 ) {
x = x - 1;
if ( x < 3) {
System.out.println(“small x”);
}
}
}
Each of the Java files on this page