Java Reference
In-Depth Information
34
public int
getMinute() {
35
return
minute;
36 }
37
38
/** Set a new minute */
39
public void
setMinute(
int
minute) {
40
this
.minute = minute;
41 repaint();
42 }
43
44
repaint panel
/** Return second */
45
public int
getSecond() {
46
return
second;
47 }
48
49
/** Set a new second */
50
public void
setSecond(
int
second) {
51
this
.second = second;
52 repaint();
53 }
54
55 @Override
/** Draw the clock */
56
repaint panel
protected void
paintComponent(Graphics g) {
override
paintComponent
57
super
.paintComponent(g);
58
59
// Initialize clock parameters
60
int
clockRadius =
61 (
int
)(Math.min(getWidth(), getHeight()) *
0.8
*
0.5
);
62
int
xCenter = getWidth() /
2
;
63
int
yCenter = getHeight() /
2
;
64
65
// Draw circle
66 g.setColor(Color.BLACK);
67 g.drawOval(xCenter - clockRadius, yCenter - clockRadius,
68
2
* clockRadius,
2
* clockRadius);
69 g.drawString(
"12"
, xCenter -
5
, yCenter - clockRadius +
12
);
70 g.drawString(
"9"
, xCenter - clockRadius +
3
, yCenter +
5
);
71 g.drawString(
"3"
, xCenter + clockRadius -
10
, yCenter +
3
);
72 g.drawString(
"6"
, xCenter -
3
, yCenter + clockRadius -
3
);
73
74
// Draw second hand
75
int
sLength = (
int
)(clockRadius *
0.8
);
76
int
xSecond = (
int
)(xCenter + sLength *
77 Math.sin(second * (
2
* Math.PI /
60
)));
78
int
ySecond = (
int
)(yCenter - sLength *
79 Math.cos(second * (
2
* Math.PI /
60
)));
80 g.setColor(Color.red);
81 g.drawLine(xCenter, yCenter, xSecond, ySecond);
82
83
// Draw minute hand
84
int
mLength = (
int
)(clockRadius *
0.65
);
85
int
xMinute = (
int
)(xCenter + mLength *
86 Math.sin(minute * (
2
* Math.PI /
60
)));
87
int
yMinute = (
int
)(yCenter - mLength *
88 Math.cos(minute * (
2
* Math.PI /
60
)));
89 g.setColor(Color.blue);
90 g.drawLine(xCenter, yCenter, xMinute, yMinute);
91
92
// Draw hour hand
93
int
hLength = (
int
)(clockRadius *
0.5
);
