java map 集合类简介[2].mht

Java Map 集合类简介,Collection,Map,ArrayList

  map.entry entry =3D (map.entry) keyvaluepairs2[i];
  object key =3D entry.getkey();
</FONT>

<FONT color=3D#a52a2a size=3D4>  object value =3D entry.getvalue();
  ...
}

</FONT></PRE><FONT size=3D4><FONT color=3D#a52a2a><SPAN =
class=3Dbodycopy>=B4=CB=B2=E2=CA=D4=CA=B9=D3=C3=C1=CB=C1=BD=D6=D6=B2=E2=C1=
=BF=B7=BD=B7=A8=A3=BA=20
=D2=BB=D6=D6=CA=C7=B2=E2=C1=BF=B5=FC=B4=FA=D4=AA=CB=D8=B5=C4=CA=B1=BC=E4=A3=
=AC=C1=ED=D2=BB=D6=D6=B2=E2=C1=BF=CA=B9=D3=C3 toarray =
=B5=F7=D3=C3=B4=B4=BD=A8=CA=FD=D7=E9=B5=C4=C6=E4=CB=FB=BF=AA=CF=FA=A1=A3 =
=B5=DA=D2=BB=D6=D6=B7=BD=B7=A8=A3=A8=BA=F6=C2=D4=B4=B4=BD=A8=CA=FD=D7=E9=CB=
=F9=D0=E8=B5=C4=CA=B1=BC=E4=A3=A9=B1=ED=C3=F7=A3=AC=CA=B9=D3=C3=D2=D1=B4=D3=
 toarray=20
=B5=F7=D3=C3=D6=D0=B4=B4=BD=A8=B5=C4=CA=FD=D7=E9=B5=FC=B4=FA=D4=AA=CB=D8=B5=
=C4=CB=D9=B6=C8=D2=AA=B1=C8=CA=B9=D3=C3 iterator =
=B5=C4=CB=D9=B6=C8=B4=F3=D4=BC=BF=EC 30%-60%=A1=A3 =
=B5=AB=C8=E7=B9=FB=BD=AB=CA=B9=D3=C3 toarray =
=B7=BD=B7=A8=B4=B4=BD=A8=CA=FD=D7=E9=B5=C4=BF=AA=CF=FA=B0=FC=BA=AC=D4=DA=C4=
=DA=A3=AC=D4=F2=CA=B9=D3=C3=20
iterator =CA=B5=BC=CA=C9=CF=D2=AA=BF=EC 10%-20%=A1=A3 =
=D2=F2=B4=CB=A3=AC=C8=E7=B9=FB=D3=C9=D3=DA=C4=B3=D6=D6=D4=AD=D2=F2=D2=AA=B4=
=B4=BD=A8=D2=BB=B8=F6=BC=AF=BA=CF=D4=AA=CB=D8=B5=C4=CA=FD=D7=E9=B6=F8=B7=C7=
=B5=FC=B4=FA=D5=E2=D0=A9=D4=AA=CB=D8=A3=AC=D4=F2=D3=A6=CA=B9=D3=C3=B8=C3=CA=
=FD=D7=E9=B5=FC=B4=FA=D4=AA=CB=D8=A1=A3=20
=B5=AB=C8=E7=B9=FB=C4=FA=B2=BB=D0=E8=D2=AA=B4=CB=D6=D0=BC=E4=CA=FD=D7=E9=A3=
=AC=D4=F2=B2=BB=D2=AA=B4=B4=BD=A8=CB=FC=A3=AC=B6=F8=CA=C7=CA=B9=D3=C3 =
iterator =B5=FC=B4=FA=D4=AA=CB=D8=A1=A3</SPAN> </FONT></FONT>
<P></P>
<P><SPAN class=3Ditalicbodycopy><A name=3Dt3></A><FONT color=3D#a52a2a =
size=3D4>=B1=ED 3=A3=BA=20
=B7=B5=BB=D8=CA=D3=CD=BC=B5=C4 map =B7=BD=B7=A8=A3=BA =
=CA=B9=D3=C3=D5=E2=D0=A9=B7=BD=B7=A8=B7=B5=BB=D8=B5=C4=B6=D4=CF=F3=A3=AC=C4=
=FA=BF=C9=D2=D4=B1=E9=C0=FA map =
=B5=C4=D4=AA=CB=D8=A3=AC=BB=B9=BF=C9=D2=D4=C9=BE=B3=FD map =
=D6=D0=B5=C4=D4=AA=CB=D8=A1=A3</FONT></SPAN><FONT=20
color=3D#a52a2a size=3D4> </FONT>
<TABLE cellPadding=3D5 width=3D"100%" align=3Dcenter bgColor=3D#dddddd =
border=3D1=20
hspace=3D"5" vspace=3D"5">
  <TBODY>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a=20
      size=3D4>entryset()</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=B7=B5=BB=D8 map =D6=D0=CB=F9=B0=FC=BA=AC=D3=B3=C9=E4=B5=C4 set =
=CA=D3=CD=BC=A1=A3=20
      set =D6=D0=B5=C4=C3=BF=B8=F6=D4=AA=CB=D8=B6=BC=CA=C7=D2=BB=B8=F6 =
map.entry =B6=D4=CF=F3=A3=AC=BF=C9=D2=D4=CA=B9=D3=C3 getkey() =BA=CD =
getvalue() =B7=BD=B7=A8=A3=A8=BB=B9=D3=D0=D2=BB=B8=F6 setvalue()=20
      =
=B7=BD=B7=A8=A3=A9=B7=C3=CE=CA=BA=F3=D5=DF=B5=C4=BC=FC=D4=AA=CB=D8=BA=CD=D6=
=B5=D4=AA=CB=D8</FONT></SPAN></TD></TR>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a=20
    size=3D4>keyset()</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=B7=B5=BB=D8 map =D6=D0=CB=F9=B0=FC=BA=AC=BC=FC=B5=C4 set =
=CA=D3=CD=BC=A1=A3=20
      =C9=BE=B3=FD set =D6=D0=B5=C4=D4=AA=CB=D8=BB=B9=BD=AB=C9=BE=B3=FD =
map =
=D6=D0=CF=E0=D3=A6=B5=C4=D3=B3=C9=E4=A3=A8=BC=FC=BA=CD=D6=B5=A3=A9</FONT>=
</SPAN></TD></TR>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a=20
    size=3D4>values()</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=B7=B5=BB=D8 map =D6=D0=CB=F9=B0=FC=BA=AC=D6=B5=B5=C4=20
      collection =CA=D3=CD=BC=A1=A3 =C9=BE=B3=FD collection =
=D6=D0=B5=C4=D4=AA=CB=D8=BB=B9=BD=AB=C9=BE=B3=FD map=20
  =
=D6=D0=CF=E0=D3=A6=B5=C4=D3=B3=C9=E4=A3=A8=BC=FC=BA=CD=D6=B5=A3=A9</FONT>=
</SPAN></TD></TR></TBODY></TABLE>
<P><FONT color=3D#a52a2a size=3D4></FONT></P>
<P><FONT size=3D4><FONT color=3D#a52a2a><SPAN =
class=3Dboldbodycopy>=B7=C3=CE=CA=D4=AA=CB=D8</SPAN>=20
</FONT></FONT></P>
<P><FONT size=3D4><FONT color=3D#a52a2a><SPAN class=3Dbodycopy>=B1=ED 4 =
=D6=D0=C1=D0=B3=F6=C1=CB map =B7=C3=CE=CA=B7=BD=B7=A8=A1=A3map=20
=CD=A8=B3=A3=CA=CA=BA=CF=B0=B4=BC=FC=A3=A8=B6=F8=B7=C7=B0=B4=D6=B5=A3=A9=BD=
=F8=D0=D0=B7=C3=CE=CA=A1=A3 map =
=B6=A8=D2=E5=D6=D0=C3=BB=D3=D0=B9=E6=B6=A8=D5=E2=BF=CF=B6=A8=CA=C7=D5=E6=B5=
=C4=A3=AC=B5=AB=CD=A8=B3=A3=C4=FA=BF=C9=D2=D4=C6=DA=CD=FB=D5=E2=CA=C7=D5=E6=
=B5=C4=A1=A3 =C0=FD=C8=E7=A3=AC=C4=FA=BF=C9=D2=D4=C6=DA=CD=FB =
containskey() =B7=BD=B7=A8=D3=EB=20
get() =B7=BD=B7=A8=D2=BB=D1=F9=BF=EC=A1=A3 =
=C1=ED=D2=BB=B7=BD=C3=E6=A3=ACcontainsvalue() =
=B7=BD=B7=A8=BA=DC=BF=C9=C4=DC=D0=E8=D2=AA=C9=A8=C3=E8 map =
=D6=D0=B5=C4=D6=B5=A3=AC=D2=F2=B4=CB=CB=FC=B5=C4=CB=D9=B6=C8=BF=C9=C4=DC=B1=
=C8=BD=CF=C2=FD=A1=A3</SPAN>=20
</FONT></FONT></P>
<P><SPAN class=3Ditalicbodycopy><A name=3Dt4></A><FONT color=3D#a52a2a =
size=3D4>=B1=ED 4=A3=BA map=20
=B7=C3=CE=CA=BA=CD=B2=E2=CA=D4=B7=BD=B7=A8=A3=BA =
=D5=E2=D0=A9=B7=BD=B7=A8=BC=EC=CB=F7=D3=D0=B9=D8 map =
=C4=DA=C8=DD=B5=C4=D0=C5=CF=A2=B5=AB=B2=BB=B8=FC=B8=C4 map =
=C4=DA=C8=DD=A1=A3</FONT></SPAN><FONT color=3D#a52a2a size=3D4>=20
</FONT>
<TABLE cellPadding=3D5 width=3D"100%" align=3Dcenter bgColor=3D#dddddd =
border=3D1=20
hspace=3D"5" vspace=3D"5">
  <TBODY>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a size=3D4>get(object =

      key)</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a=20
      =
size=3D4>=B7=B5=BB=D8=D3=EB=D6=B8=B6=A8=BC=FC=B9=D8=C1=AA=B5=C4=D6=B5</FO=
NT></SPAN></TD></TR>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>containskey(object=20
      key)</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=C8=E7=B9=FB map =
=B0=FC=BA=AC=D6=B8=B6=A8=BC=FC=B5=C4=D3=B3=C9=E4=A3=AC=D4=F2=B7=B5=BB=D8 =

      true</FONT></SPAN></TD></TR>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>containsvalue(object=20
      value)</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=C8=E7=B9=FB=B4=CB map=20
      =
=BD=AB=D2=BB=B8=F6=BB=F2=B6=E0=B8=F6=BC=FC=D3=B3=C9=E4=B5=BD=D6=B8=B6=A8=D6=
=B5=A3=AC=D4=F2=B7=B5=BB=D8 true</FONT></SPAN></TD></TR>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a=20
    size=3D4>isempty()</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=C8=E7=B9=FB map =
=B2=BB=B0=FC=BA=AC=BC=FC-=D6=B5=D3=B3=C9=E4=A3=AC=D4=F2=B7=B5=BB=D8=20
      true</FONT></SPAN></TD></TR>
  <TR>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a=20
size=3D4>size()</FONT></SPAN></TD>
    <TD><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=B7=B5=BB=D8 map=20
      =
=D6=D0=B5=C4=BC=FC-=D6=B5=D3=B3=C9=E4=B5=C4=CA=FD=C4=BF</FONT></SPAN></TD=
></TR></TBODY></TABLE>
<P><FONT color=3D#a52a2a size=3D4></FONT></P>
<P><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=B6=D4=CA=B9=D3=C3 containskey() =BA=CD=20
containsvalue() =B1=E9=C0=FA hashmap =
=D6=D0=CB=F9=D3=D0=D4=AA=CB=D8=CB=F9=D0=E8=CA=B1=BC=E4=B5=C4=B2=E2=CA=D4=B1=
=ED=C3=F7=A3=ACcontainsvalue() =
=CB=F9=D0=E8=B5=C4=CA=B1=BC=E4=D2=AA=B3=A4=BA=DC=B6=E0=A1=A3 =
=CA=B5=BC=CA=C9=CF=D2=AA=B3=A4=BC=B8=B8=F6=CA=FD=C1=BF=BC=B6=A3=A1=20
=A3=A8=B2=CE=BC=FB</FONT><A=20
href=3D"http://www.oracle.com/technology/global/cn/pub/articles/maps1.htm=
l#f1"><SPAN=20
class=3Dbodylink><FONT color=3D#a52a2a size=3D4>=CD=BC =
1</FONT></SPAN></A><FONT=20
color=3D#a52a2a size=3D4> =BA=CD</FONT><A=20
href=3D"http://www.oracle.com/technology/global/cn/pub/articles/maps1.htm=
l#f2"><SPAN=20
class=3Dbodylink><FONT color=3D#a52a2a size=3D4>=CD=BC =
2</FONT></SPAN></A><FONT=20
color=3D#a52a2a =
size=3D4>=A3=AC=D2=D4=BC=B0=CB=E6=B8=BD=CE=C4=BC=FE=D6=D0=B5=C4 =
</FONT><A=20
href=3D"http://www.oracle.com/technology/pub/listing/jack_test2.java"=20
target=3D_blank><SPAN class=3Dbodylink><FONT color=3D#a52a2a=20
size=3D4>test2</FONT></SPAN></A><FONT color=3D#a52a2a =
size=3D4>=A3=A9=A1=A3 =D2=F2=B4=CB=A3=AC=C8=E7=B9=FB=20
containsvalue() =
=CA=C7=D3=A6=D3=C3=B3=CC=D0=F2=D6=D0=B5=C4=D0=D4=C4=DC=CE=CA=CC=E2=A3=AC=CB=
=FC=BD=AB=BA=DC=BF=EC=CF=D4=CF=D6=B3=F6=C0=B4=A3=AC=B2=A2=BF=C9=D2=D4=CD=A8=
=B9=FD=BC=E0=B2=E2=C4=FA=B5=C4=D3=A6=D3=C3=B3=CC=D0=F2=C7=E1=CB=C9=B5=D8=BD=
=AB=C6=E4=CA=B6=B1=F0=A1=A3=20
=D5=E2=D6=D6=C7=E9=BF=F6=CF=C2=A3=AC=CE=D2=CF=E0=D0=C5=C4=FA=C4=DC=B9=BB=CF=
=EB=B3=F6=D2=BB=B8=F6=D3=D0=D0=A7=B5=C4=CC=E6=BB=BB=B7=BD=B7=A8=C0=B4=CA=B5=
=CF=D6 containsvalue() =CC=E1=B9=A9=B5=C4=B5=C8=D0=A7=B9=A6=C4=DC=A1=A3 =
=B5=AB=C8=E7=B9=FB=CF=EB=B2=BB=B3=F6=B0=EC=B7=A8=A3=AC=D4=F2=D2=BB=B8=F6=BF=
=C9=D0=D0=B5=C4=BD=E2=BE=F6=B7=BD=B0=B8=CA=C7=D4=D9=B4=B4=BD=A8=D2=BB=B8=F6=
=20
map=A3=AC=B2=A2=BD=AB=B5=DA=D2=BB=B8=F6 map =
=B5=C4=CB=F9=D3=D0=D6=B5=D7=F7=CE=AA=BC=FC=A1=A3 =
=D5=E2=D1=F9=A3=AC=B5=DA=D2=BB=B8=F6 map =C9=CF=B5=C4 containsvalue() =
=BD=AB=B3=C9=CE=AA=B5=DA=B6=FE=B8=F6 map =C9=CF=B8=FC=D3=D0=D0=A7=B5=C4=20
containskey()=A1=A3</FONT></SPAN><FONT color=3D#a52a2a size=3D4> =
</FONT></P>
<P><A name=3Df1></A>
<TABLE width=3D"100%" align=3Dcenter>
  <TBODY>
  <TR>
    <TD align=3Dmiddle><FONT color=3D#a52a2a size=3D4><IMG height=3D468 =
alt=3D"=CD=BC 1"=20
      src=3D"http://www.oracle.com/technology/pub/images/map_test.gif" =
width=3D750=20
      border=3D0> </FONT></TD></TR>
  <TR>
    <TD>
      <CENTER><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=CD=BC 1=A3=BA =CA=B9=D3=C3 jdeveloper=20
      =B4=B4=BD=A8=B2=A2=D4=CB=D0=D0 map =
=B2=E2=CA=D4=C0=E0</FONT></SPAN></CENTER></TD></TR></TBODY></TABLE>
<P><FONT color=3D#a52a2a size=3D4></FONT></P>
<P><A name=3Df2></A>
<TABLE width=3D"100%" align=3Dcenter>
  <TBODY>
  <TR>
    <TD align=3Dmiddle><FONT color=3D#a52a2a size=3D4><IMG height=3D448 =
alt=3D"=CD=BC 2"=20
      src=3D"http://www.oracle.com/technology/pub/images/map_test2.gif" =
width=3D750=20
      border=3D0> </FONT></TD></TR>
  <TR>
    <TD>
      <CENTER><SPAN class=3Dbodycopy><FONT color=3D#a52a2a =
size=3D4>=CD=BC 2=A3=BA =D4=DA jdeveloper=20
      =
=D6=D0=CA=B9=D3=C3=D6=B4=D0=D0=BC=E0=B2=E2=C6=F7=BD=F8=D0=D0=B5=C4=D0=D4=C4=
=DC=BC=E0=B2=E2=B2=E9=B3=F6=D3=A6=D3=C3=B3=CC=D0=F2=D6=D0=B5=C4=C6=BF=BE=B1=
</FONT></SPAN></CENTER></TD></TR></TBODY></TABLE></P>
<DIV class=3Dad_doc_ad_2>
<SCRIPT language=3Djavascript =
src=3D"http://www.cn-doc.com/ad_code/doc_ad_2.js"=20
type=3Dtext/javascript></SCRIPT>
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