📄 java_lang_reflect包介绍.mht
字号:
bsp; catch=20
(Throwable e)=20
{<BR><BR> &nbs=
p; System.err.println(e);<BR><BR>  =
; }<BR><BR> }<BR><BR>=
}<BR><BR> =CE=D2=
=C3=C7=BB=E1=D7=D0=CF=B8=B5=D8=BD=E9=C9=DC=B7=BD=B7=A8=B5=F7=D3=C3=B5=C4=CA=
=B5=CF=D6=A1=A3<BR><BR>=CA=D7=CF=C8=A3=AC=C9=F9=C3=F7=C1=CB=D2=BB=B8=F6=C0=
=E0method2=A3=AC=B8=C3=C0=E0=D3=D0=D2=BB=B8=F6=B7=BD=B7=A8public=20
int add(int a, int=20
b)=A1=A3=C7=EB=D7=A2=D2=E2=B8=C3=B7=BD=B7=A8=B5=C4=B7=BD=B7=A8=C3=FB=A1=AF=
add=A1=AF=A1=A2=C1=BD=B8=F6=D0=CE=CA=BD=B2=CE=CA=FD=B5=C4=CA=FD=BE=DD=C0=E0=
=D0=CDint=D2=D4=BC=B0=B7=B5=BB=D8=D6=B5=C0=E0=D0=CDint=A1=A3=D2=F2=CE=AA=A3=
=AC=D5=E2=D0=A9=D0=C5=CF=A2=B6=D4=B6=AF=CC=AC=B5=D8=B5=F7=D3=C3=D2=BB=B8=F6=
=C0=E0=B5=C4=B7=BD=B7=A8=CA=C7=B7=C7=B3=A3=D6=D8=D2=AA=B5=C4=A1=A3<BR><BR=
> =BD=D3=CF=C2=C0=B4=D4=DA=D6=F7=
=B5=F7=BA=AF=CA=FD=D6=D0=CA=B5=CF=D6=B5=C4=B9=A6=C4=DC=C8=E7=CF=C2=A3=BA<=
BR><BR>1=A3=AEClass=20
cls =3D =
Class.forName("method2")=A3=BA=BB=F1=C8=A1=C0=E0=CA=B5=C0=FD=B6=D4=CF=F3c=
ls=A1=A3<BR><BR>2=A3=AEClass partypes[] =3D new=20
Class[2];<BR><BR> partypes[0] =3D=20
Integer.TYPE;<BR><BR> partypes[1] =3D=20
Integer.TYPE;<BR><BR>=C9=F9=C3=F7=D2=BB=B8=F6=C0=E0=CA=FD=D7=E9=A3=AC=D3=C3=
=C0=B4=B1=A3=B4=E6=C1=BD=B8=F6=B2=CE=CA=FD=B5=C4=CA=FD=BE=DD=C0=E0=D0=CD=A1=
=A3<BR><BR>3=A3=AEMethod meth =3D=20
cls.getMethod("add",=20
partypes);=D7=A2=D2=E2getMethod=B7=BD=B7=A8=A3=AC=B8=C3=B7=BD=B7=A8=BD=AB=
=B7=B5=BB=D8=D2=BB=B8=F6=C6=A5=C5=E4=B5=C4=B7=BD=B7=A8=A1=A3=C6=A5=C5=E4=B5=
=C4=CC=F5=BC=FE=A3=AC=D3=D0=C1=BD=B2=BF=B7=D6=C0=B4=CF=DE=B6=A8=A1=A3=D2=BB=
=B8=F6=CA=C7=B7=BD=B7=A8=C3=FB=A3=AC=D2=BB=B8=F6=CA=C7=B7=BD=B7=A8=B5=C4=B2=
=CE=CA=FD=C0=E0=D0=CD=CA=FD=D7=E9=A1=A3(=D2=F2=CE=AAJAVA=D6=D0=D4=CA=D0=ED=
=B7=BD=B7=A8=B5=C4=D6=D8=D4=D8=A3=AC=CB=F9=D2=D4=B1=D8=D0=EB=CB=B5=C3=F7=B2=
=CE=CA=FD=B5=C4=CA=FD=BE=DD=C0=E0=D0=CD)=B2=CE=CA=FD=C0=E0=D0=CD=CA=FD=D7=
=E9=D6=D0=B5=C4=B8=F7=B8=F6=B2=CE=CA=FD=C0=E0=D0=CD=B5=C4=CB=B3=D0=F2=B1=D8=
=D0=EB=D3=EB=B7=BD=B7=A8=C9=F9=C3=F7=CA=B1=B5=C4=CB=B3=D0=F2=CF=E0=CD=AC=A1=
=A3<BR><BR>4=A3=AEmethod2=20
methobj =3D new =
method2()=A3=BA=C9=F9=C3=F7=D2=BB=B8=F6=C0=E0method2=B5=C4=CA=B5=C0=FD=B1=
=E4=C1=BF=A1=A3<BR><BR>5=A3=AEObject arglist[] =3D new=20
Object[2];<BR><BR> arglist[0] =3D new=20
Integer(37);<BR><BR> arglist[1] =3D new=20
Integer(47);<BR><BR>=C9=F9=C3=F7=D2=BB=B8=F6=B6=D4=CF=F3=CA=FD=D7=E9=A3=AC=
=C0=B4=B4=E6=B4=A2=C1=BD=B8=F6=B2=CE=CA=FD=CA=B5=C0=FD=A1=A3<BR><BR>6=A3=AE=
Object retobj =3D=20
meth.invoke(methobj,=20
arglist)=A3=BA=CA=B5=BC=CA=B5=F7=D3=C3add=BA=AF=CA=FD=A1=A3=D7=A2=D2=E2=B7=
=BD=B7=A8invoke()=B5=C4=C1=BD=B8=F6=B2=CE=CA=FD=A3=ACmethobj=CA=C7=B5=F7=D3=
=C3=B7=BD=B7=A8(=BB=F2=D5=DF=CA=C7=C9=F9=C3=F7=B7=BD=B7=A8)=B5=C4=C0=E0=B5=
=C4=D2=BB=B8=F6=CA=B5=C0=FD=A3=ACarglist=C8=B7=CA=B5=B1=BB=B5=F7=D3=C3=B7=
=BD=B7=A8(=D5=E2=C0=EF=CA=C7add=B7=BD=B7=A8)=B5=C4=A3=AC=B2=CE=CA=FD=CA=B5=
=C0=FD=CA=FD=D7=E9=A1=A3=B7=B5=BB=D8=D6=B5=C8=D4=C8=BB=CA=C7=D2=BB=B8=F6=B6=
=D4=CF=F3=B5=C4=CA=B5=C0=FDretobj=A1=A3<BR><BR>7=A3=AEInteger=20
retval =3D=20
(Integer)retobj;<BR><BR> System.out.println(retval.intVa=
lue());=BD=AB=B7=B5=BB=D8=B5=C4=B6=D4=CF=F3=CA=B5=C0=FD=A3=AC=BD=F8=D0=D0=
=C0=E0=D0=CD=D7=AA=BB=BB=A3=AC=B2=A2=CA=E4=B3=F6=A1=A3<BR><BR>3.5=20
=C9=FA=B3=C9=D2=BB=B8=F6=D0=C2=B5=C4=CA=B5=C0=FD<BR>import=20
java.lang.reflect.*;<BR><BR> &nb=
sp;<BR><BR> public=20
class constructor2 {<BR><BR> public=20
constructor2()<BR><BR> {<BR><BR> =
}<BR><BR> &nbs=
p; <BR><BR> public=20
constructor2(int a, int=20
b)<BR><BR> {<BR><BR> =
System.out.println(<BR><BR> &nbs=
p; "a=20
=3D " + a + " b =3D " +=20
b);<BR><BR> }<BR><BR>  =
; <BR><BR> &nbs=
p;public=20
static void main(String=20
args[])<BR><BR> {<BR><BR> &=
nbsp; try=20
{<BR><BR> &nbs=
p;Class=20
cls =3D=20
Class.forName("constructor2");<BR><BR>  =
; Class=20
partypes[] =3D new=20
Class[2];<BR><BR> &n=
bsp; partypes[0]=20
=3D=20
Integer.TYPE;<BR><BR> &nbs=
p; partypes[1]=20
=3D=20
Integer.TYPE;<BR><BR> &nbs=
p; Constructor=20
ct=20
<BR><BR>  =
; =3D=20
cls.getConstructor(partypes);<BR><BR> =
Object=20
arglist[] =3D new=20
Object[2];<BR><BR> &=
nbsp; arglist[0]=20
=3D new=20
Integer(37);<BR><BR>  =
; arglist[1]=20
=3D new=20
Integer(47);<BR><BR>  =
; Object=20
retobj =3D=20
ct.newInstance(arglist);<BR><BR>  =
; }<BR><BR> &nb=
sp;catch=20
(Throwable e)=20
{<BR><BR> &nbs=
p; System.err.println(e);<BR><BR>  =
; }<BR><BR> }<BR><BR>=
}<BR><BR>=D5=E2=B8=F6=C0=FD=D7=D3=CB=B5=C3=F7=C1=CBCons=
tructor=C0=E0=B5=C4newInstancce()=B7=BD=B7=A8=B5=C4=CA=B9=D3=C3=A1=A3=C6=E4=
=BE=DF=CC=E5=B5=C4=B9=FD=B3=CC=D3=EB3.4=BD=DA=D6=D0=CA=B9=D3=C3invoke()=B7=
=BD=B7=A8=C0=E0=CB=C6=A3=AC=B2=BB=D4=D9=B6=E0=CB=B5=C1=CB=A1=A3<BR><BR>
<P>
<P =
align=3Dcenter>=B1=BE=CC=FB=D3=C9=B7=E7=D6=D0=D3=A2=D0=DB=D3=DA2003-11-3 =
18:37:23=B7=A2=B1=ED.</FONT></P>
<P>
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)<FONT color=3D#666666>2003-11-3=20
18:37:23</FONT>[<FONT color=3D#ff6666>2653</FONT>] (10K)
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=CA=B5=C0=FD</A>(=B7=E7=D6=D0=D3=A2=D0=DB)<FONT=20
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<BR><FONT color=3Ddarkblue><STRONG><A =
name=3Dre>=BB=D8=B8=B4=A3=BA</A></STRONG>=20
Java.lang.reflect=B0=FC=BD=E9=C9=DC </FONT>
<P></P>
<FORM name=3DfrmAnnounce action=3DSaveReAnnounce.asp =
method=3Dpost><INPUT type=3Dhidden=20
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<DIV align=3Dcenter>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 border=3D0>
<TBODY>
<TR>
<TD vAlign=3Dtop>
<TABLE cellSpacing=3D1 cellPadding=3D1 border=3D0>
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