Cr
eat
eCl
asses:
publ
i
cclassEmployee{
pri
vat
einti
d;
pri
vat
eStri
ngfir
stName;
pri
vat
eStri
nglastName;
pri
vat
eintsal
ary;
publ
icEmpl oyee(){}
publ
icEmpl oyee(Stringf name,St
ri
ngl name,
intsal
ary
){
thi
s.fi
rstName=f name;
thi
s.l
ast Name=l name;
thi
s.salary=sal ary;
}
publ
icintget I
d(){
ret
urni d;
}
publ
icvoi dsetId(inti d){
thi
s.i
d=i d;
}
publ
icStr i
ngget Fir
st Name( ){
ret
urnf ir
stName;
}
publ
icvoi dsetFirstName(St ri
ngf
irst
_name){
thi
s.fi
rstName=f i
r st_name;
}
publ
icStr i
ngget Last Name( ){
ret
urnl astName;
}
publ
icvoi dsetLastName(St ri
ngl
ast_name){
thi
s.l
ast Name=l ast _name;
}
publ
icintget Salary(){
ret
urnsal ary;
}
publ
icvoi dsetSalary (intsalar
y){
thi
s.salary=sal ary;
}
}
Cr
eat
eDat
abaseTabl
es:
createt abl
eEMPLOYEE(
idI NTNOTNULLaut o_i
ncrement,
first_nameVARCHAR( 20)defaul
tNULL,
last _
nameVARCHAR( 20)defaul
tNULL,
sal ary INTdefaultNULL,
PRI MARYKEY( id)
);
Cr
eat
eMappi
ngConf
igur
ati
onFi
le:
<?xml version=" 1.
0"encodi ng="utf-8"? >
<!
DOCTYPEhi bernate-mappi ngPUBLI C"-//Hibernat
e/Hi bernat
eMappi ngDTD/
/EN"
"http://www. hibernate.org/ dtd/hiber nate-mappi ng-
3.0.dtd">
<hiber nate-mappi ng>
<cl assname=" Empl oyee"t abl
e=" EMPLOYEE" >
<met aat tr
ibute="class- descr i
ption" >
Thi sclasscont ainst heempl oy eedet ail.
</ met a>
<idname=" id"type=" i
nt "column=" id">
<gener at
orcl ass="nat ive"/>
</ i
d>
<pr oper t
yname=" fi
rstName"col umn=" fi
rst_name"ty pe="st
ring"
/>
<pr oper t
yname=" l
ast Name"col umn=" l
ast_name"t y
pe=" str
ing"/
>
<pr oper t
yname=" salary "column=" salary"type="
int"
/>
</ class>
</hiber nate-mappi ng>
Cr
eat
eAppl
icat
ionCl
ass:
Finall
y,wewill
createourapplicat
ionclasswiththemain(
)
met hodt or
untheapplicat
ion.Wewi l
luset
hisappli
cat
ionto
savef ewEmployee'
sr ecordsandt henwewillappl
yCRUD
operationsonthoserecords.
i
mpor
tjav
a.ut
il
.Li
st;
i
mpor
tjav
a.ut
il
.Dat
e;
i
mpor
tjav
a.ut
il
.I
ter
ator
;
i
mpor
tor
g.hi
ber
nat
e.HibernateExcepti
on;
i
mpor
tor
g.hi
ber
nat
e.Session;
i
mpor
tor
g.hi
ber
nat
e.Transaction;
i
mpor
tor
g.hi
ber
nat
e.SessionFactory;
i
mpor
tor
g.hi
ber
nat
e.cfg.
Conf i
gurati
on;
publ
iccl assManageEmpl oyee{
pri
vatest at
icSessionFact oryfactory;
publicst ati
cv oidmain( String[]args){
t
ry{
fact ory=newConf igur ation().
confi
gure(
).buil
dSessi
onFactor
y()
;
}
catch( Throwableex ){
Sy stem. err
.pri
ntl
n("Fai l
edt ocr eat
esessionFactor
yobject
."+ex);
thrownewExcept ionI nIni
tiali
zerEr
ror(
ex);
}
ManageEmpl oyeeME=newManageEmpl oy ee()
;
/
*Addf ewempl
oyeerecor
dsi
ndatabase*/
I
ntegerempI
D1=ME.addEmpl
oyee("
Zara"
,"Ali
",1000);
I
ntegerempI
D2=ME.addEmpl
oyee("
Daisy
","Das",5000);
I
ntegerempI
D3=ME.addEmpl
oyee("
John","
Paul",10000);
/
*Li
stdownalltheempl
oyees*
/
ME.
li
stEmpl
oyees()
;
/
*Updateemployee'srecords*/
ME.
updateEmployee(empID1,5000)
;
/
*Deleteanemployeefr
om t
hedat
abase*
/
ME.
deleteEmpl
oyee(empI
D2)
;
/*Li
stdownnewli
stoft
heempl
oyees*
/
ME.l
ist
Employ
ees(
);
}
/*Met hodt oCREATEanempl oy eei nthedat abase* /
publ icInt egeraddEmpl oy ee(St r
ingf name, Stri
ngl name, intsalary)
{
Sessi onsessi on=f act ory.openSessi on( );
Transact iont x=nul l;
I
nt egerempl oyeeI D=nul l;
try{
tx=sessi on. begi nTr ansact i
on( );
Empl oy eeempl oy ee=newEmpl oy ee(fname, l
name, salary
);
empl oyeeI D=( I
nt eger )sessi on. save(empl oyee);
tx.commi t();
}catch( Hi bernat eExcept i
one){
i
f( tx!=nul l)tx.rollback( );
e.printSt ackTr ace( );
}fi
nal l
y{
sessi on. close( );
}
returnempl oyeeI D;
}
/*Met hodt oREADal ltheempl oy ees* /
publ icv oidl istEmpl oy ees() {
Sessi onsessi on=f act ory.openSessi on( );
Transact iont x=nul l;
try{
tx=sessi on. begi nTr ansact i
on( );
Listempl oy ees=sessi on.creat eQuer y ("
FROM Empl oy ee").
li
st()
;
for( It
er atori terator=
empl oyees. i
terator(); i
terator .
hasNext ();
){
Empl oy eeempl oy ee=( Empl oy ee)iterator.next(
);
Sy stem. out.print (
"FirstName: "+empl oyee.getFir
stName( ))
;
Sy stem. out.print (
"LastName: "+empl oyee.getLast Name( )
);
Sy stem. out.print l
n("Sal ary: "+empl oy ee.getSalary());
}
tx.commi t();
}catch( Hi bernat eExcept i
one){
i
f( tx!=nul l)tx.rollback( );
e.printSt ackTr ace( );
}fi
nal l
y{
sessi on. close( );
}
}
/*Met hodt oUPDATEsal aryf oranempl oy ee* /
publ icv oidupdat eEmpl oy ee( I
ntegerEmpl oyeeID, i
ntsalar y){
Sessi onsessi on=f act ory.openSessi on( );
Transact iont x=nul l;
try{
tx=sessi on. begi nTr ansact i
on( );
Empl oy eeempl oy ee=
(Empl oy ee) sessi on.get (Empl oyee. class,Empl oy eeI
D) ;
empl oyee. set Salar y(sal ary) ;
sessi on.update(employee);
tx.commi t();
}catch( Hibernat eExcept ione){
i
f( tx!=null
)t x.roll
back( );
e.printStackTr ace( )
;
}fi
nal l
y{
sessi on.close( );
}
}
/*Met hodt oDELETEanempl oyeefrom therecor
ds* /
publ icv oiddel eteEmpl oyee(IntegerEmployeeID){
Sessi onsessi on=f actory.
openSession();
Transact i
ont x=nul l;
try{
tx=sessi on. beginTr ansaction();
Empl oyeeempl oy ee=
(Empl oy ee) session.get(Employee.
class,
Empl oy
eeI
D);
sessi on.delet e(empl oyee);
tx.commi t();
}catch( Hibernat eExcept ione){
i
f( tx!=null
)t x.roll
back( );
e.printStackTr ace( )
;
}fi
nal l
y{
sessi on.close( );
}
}
}
$j
av aManageEmpl oyee
.
..
..
..VARI OUSLOGMESSAGESWI LLDISPLAYHERE. ..
..
..
.
Fi
rstName:
ZaraLastName:AliSal
ary:
1000
Fi
rstName:
DaisyLastName:DasSalary:
5000
Fi
rstName:
JohnLastName:PaulSalary:10000
Fi
rstName:
ZaraLastName:AliSal
ary:
5000
Fi
rstName:
JohnLastName:PaulSalary:10000
mysql>select*f r
om EMPLOYEE;
+--
--
+--
--
--
--
---
-+-
---
--
---
--
+---
--
--
-+
|i
d| f
ir
st_name| l
ast_name| sal
ary|
+--
--
+--
--
--
--
---
-+-
---
--
---
--
+---
--
--
-+
|29|Zara | Ali |5000|
|31|John | Paul |10000|
+--
--
+--
--
--
--
---
-+-
---
--
---
--
+---
--
--
-+
2rowsinset( 0.00sec
