Java Reference
In-Depth Information
17. 0
18. An accessorȌit doesn't modify the original string but returns a new string
with uppercase letters.
19.
box.translate(Ċ5, Ċ10)
, provided the method is called
immediately after storing the new rectangle into
box
.
20.
x: 30, y: 25
21. Because the
translate
method doesn't modify the shape of the rectangle.
22. Add the statement
import java.util.Random
; at the top of your
program.
23.
toLowerCase
24.
ÐHello, Space !Ñ
Ȍonly the leading and trailing spaces are trimmed.
25. Now
greeting
and
greeting2
both refer to the same
String
object.
26. Both variables still refer to the same string, and the string has not been
modified. Recall that the
toUpperCase
method constructs a new string
that contains uppercase characters, leaving the original string unchanged.
79
80
27. Modify the
EmptyFrameViewer
program as follows:
frame.setSize(300, 300);
frame.setTitle(ÐHello, World!Ñ);
28. Construct two
JFrame
objects, set each of their sizes, and call
setVisible(true)
on each of them.
29.
Rectangle box = new Rectangle(5, 10, 20, 20)
;
30. Replace the call to
box.translate(15, 25)
with
box = new Rectangle(20, 35, 20, 20);
31. The compiler complains that
g
doesn't have a
draw
method.
32.
g2.draw(new Ellipse2D.Double(75, 75, 50, 50))
;
