tto
baddJButto
bsubJButto
bmulJButto
bdivJButto
bcosJButto
bsi
JButto
bjieche
gJButto
bpowJButto
beqlJButto
bclearJButto
um1double
um2doublee
dboolea
addboolea
subboolea
mulboolea
divboolea
cosboolea
si
boolea
jieche
gboolea
powboolea

I
terfaceActio
Liste
er
f面向对象课程设计报告
CalculatorFu
jieche
gactio
Performe
dActio
Eve
teDisplayi
ti
第5页，共24页
加上代码：
publicclassCalculatorexte
dsJFrameimpleme
tsActio
Liste
er
JMe
uBarmbJMe
ume
uJMe
uItemtt1t2JPa
elp
l1p
l2JTextFieldtextfildGridLayoutgrdJButto
b0b1b2b3b4b5b6b7b8b9bpbdJButto
baddbsubbmulbdivbcosbsi
bjieche
gbpowbeqlbclearStri
gstrboolea
e
daddsubmuldivcossi
jieche
gpowdouble
um1
um2Calculator

publicvoidactio
PerformedActio
Eve
te
elseifegetSourcebsub
elseifegetSourcebmul
f面向对象课程设计报告
elseifegetSourcebdiv
elseifegetSourcebcos
e
dtrue输入结束elseifegetSourcebsi
elseifegetSourcebjieche
g
elseifegetSourcebpow
elseifegetSourcebclear
bdsetE
abledtruetextfildsetText