JAVA GUI???????

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JAVA GUI???????

• ?2?

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public void paint(Graphics g)
g.drawLine(100,100,200,200)
g.drawLine(200,100,300,200)
??2??????
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public void paint(Graphics g)
g.setColor(Color.red) g.drawLine(100,100,200,2
00) g.setColor(Color.blue)
g.drawLine(200,100,300,200)
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setColor(?)??????????
??? Color.red Color.blue Color.yellow Color.white
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?????????3??(RGB) ? ? ? ???????????????????
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setColor(new Color(?,?,?)) ??????? 0255??????????
?? ???????????
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setColor(new Color(0,0,0))
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setColor(new Color(255,255,255))
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setColor(new Color(0,255,255))
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setColor(new Color(125,125,125))
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public void paint(Graphics g)
g.setColor(new Color(200,0,150))
g.fillRect(100,100,200,50)
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???????????????? ????????????(??????????)
??java?for??????????
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for?
for(??????????1??????)
? for(i1ilt5i)
i??i?1??????????? ???4????????
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for???????
public void paint(Graphics g) int i
for(i100ilt300i10)
g.drawLine(100,i,i,300)
i10?? i?10?????????? ??????????? ??????????
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for???????
public void paint(Graphics g) int i
for(i0ilt255i) g.setColor(new
Color(0,i,255-i)) g.drawLine(i,0,i,100)

???????? ?????!
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????????????-1,1-1,1????? ???????500500?????
???????(x,y)?? ??????(x,y)????
x250250x y250-250y ??????
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????yx ?????????
2
???????????????????????? JAVA??????????????? ??(20
0,200)?????????? drawLine?????????????
drawLine(200,200,200,200)
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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

?????????? x,y?double??????
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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

????x1,y1??????? ??????????????? ???
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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

x??1??1???0.01?? ?????????????
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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

???????? ???????????????
???????????? ??????????
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public void paint(Graphics g) double x,y
int x1,y1 for(x-1xlt1x0.01)
yxx x1(int)(250250x)
y1(int)(250-250y) g.drawLine(x1,y1,x1,y1)

(x1,y1)???????
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