Bài 13: Class trong Java (tiếp)

[ngphuong92]

cảm ơn tiasangmoi92 nhiều .

[beheokute]

bài này dễ hiểu hơn mấy bài trc..ý kiến riêng của mk :d

[zonbee770]

mình thấy bài này dễ hiểu. cảm ơn rất nhiều

[gamecothu001]

mình bị lỗi khi chạy project này, mình giải nén vào thư mục d:\hoc_java, các bạn giúp với, cảm ơn nhiều.
updating property file: d:\hoc_java\sinhvien\build\built-jar.properties
compiling 1 source file to d:\hoc_java\sinhvien\build\classes
javac: invalid target release: 1.7
usage: javac <options> <source files>
use -help for a list of possible options
d:\hoc_java\sinhvien
bproject\build-impl.xml:949: the following error occurred while executing this line:
d:\hoc_java\sinhvien
bproject\build-impl.xml:268: compile failed; see the compiler error output for details.
build failed (total time: 1 second)

[Sonny250515]

hi all,

trong một chuong trình có nhiều class, thì java sẽ bắt đầu chạy từ lớp nào ? có cách nào để buộc chương trình sẽ chạy 1 lớp đầu tiên hay ko ?

thanks,

chào bạn,

nếu bài có nhiều class thì chương trình sẽ chạy class có hàm main trước

[color=#000000]
[/color][color=#007700]public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {[/color] 

[homeishady]

<div class="bbcodeblock bbcodequote bbcmspoilerblock">
<div class="attribution type"><noscript>package quanlytruonghoc (move your mouse to reveal the content)</noscript>

package quanlytruonghoc (open)
package quanlytruonghoc (close)

</div>
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<div class="bbcm_spoiler_noscript"><blockquote>

[color=#000000]
package quanlytruonghoc[/color][color=#007700];public class [/color][color=#0000bb]nhansu [/color][color=#007700]{public [/color][color=#0000bb]string phongban[/color][color=#007700];}[/color] 

[color=#000000]
package quanlytruonghoc[/color][color=#007700];public class [/color][color=#0000bb]thuvien [/color][color=#007700]{public [/color][color=#0000bb]string tensach[/color][color=#007700];}[/color] 

[color=#000000]
package quanlytruonghoc[/color][color=#007700];public class [/color][color=#0000bb]truonghoc [/color][color=#007700]{public [/color][color=#0000bb]string tentruong[/color][color=#007700];}[/color] 

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<div class="bbcodeblock bbcodequote bbcmspoilerblock">
<div class="attribution type"><noscript>package truonghoc (move your mouse to reveal the content)</noscript>

package truonghoc (open)
package truonghoc (close)

</div>
<div class="quotecontent">
<div class="bbcm_spoiler_noscript"><blockquote>

[color=#000000]
package truonghoc[/color][color=#007700]; public class [/color][color=#0000bb]giangvien [/color][color=#007700]{[/color][color=#0000bb]string hotengv[/color][color=#007700];[/color][color=#0000bb]string mon[/color][color=#007700];[/color][color=#0000bb]float luong[/color][color=#007700];}[/color] 

[color=#000000]
package truonghoc[/color][color=#007700]; public class [/color][color=#0000bb]hocsinh [/color][color=#007700]{[/color][color=#0000bb]string hotenhs[/color][color=#007700];[/color][color=#0000bb]string lop[/color][color=#007700];[/color][color=#0000bb]double diemtb[/color][color=#007700];}[/color] 

[color=#000000]
package truonghoc[/color][color=#007700]; [/color][color=#0000bb]import quanlytruonghoc[/color][color=#007700].*;[/color][color=#0000bb]import [/color][color=#007700]static [/color][color=#0000bb]java[/color][color=#007700].[/color][color=#0000bb]lang[/color][color=#007700].[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700]; public class [/color][color=#0000bb]truyvan [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) { [/color][color=#0000bb]giangvien gv1 [/color][color=#007700]= new [/color][color=#0000bb]giangvien[/color][color=#007700]();[/color][color=#0000bb]gv1[/color][color=#007700].[/color][color=#0000bb]hotengv [/color][color=#007700]= [/color][color=#dd0000]"nguyen van a"[/color][color=#007700];[/color][color=#0000bb]gv1[/color][color=#007700].[/color][color=#0000bb]mon [/color][color=#007700]= [/color][color=#dd0000]"toan"[/color][color=#007700];[/color][color=#0000bb]gv1[/color][color=#007700].[/color][color=#0000bb]luong [/color][color=#007700]= [/color][color=#0000bb]760[/color][color=#007700]; [/color][color=#0000bb]hocsinh hs1 [/color][color=#007700]= new [/color][color=#0000bb]hocsinh[/color][color=#007700]();[/color][color=#0000bb]hs1[/color][color=#007700].[/color][color=#0000bb]hotenhs [/color][color=#007700]=[/color][color=#dd0000]" nguyen van b"[/color][color=#007700];[/color][color=#0000bb]hs1[/color][color=#007700].[/color][color=#0000bb]lop [/color][color=#007700]=[/color][color=#dd0000]"12a10"[/color][color=#007700];[/color][color=#0000bb]hs1[/color][color=#007700].[/color][color=#0000bb]diemtb [/color][color=#007700]= [/color][color=#0000bb]9.5[/color][color=#007700]; [/color][color=#0000bb]nhansu ns1 [/color][color=#007700]= new [/color][color=#0000bb]nhansu[/color][color=#007700]();[/color][color=#0000bb]ns1[/color][color=#007700].[/color][color=#0000bb]phongban [/color][color=#007700]= [/color][color=#dd0000]"ke toan"[/color][color=#007700]; [/color][color=#0000bb]thuvien tv1 [/color][color=#007700]= new [/color][color=#0000bb]thuvien[/color][color=#007700]();[/color][color=#0000bb]tv1[/color][color=#007700].[/color][color=#0000bb]tensach [/color][color=#007700]= [/color][color=#dd0000]"java"[/color][color=#007700]; [/color][color=#0000bb]truonghoc th1 [/color][color=#007700]= new [/color][color=#0000bb]truonghoc[/color][color=#007700]();[/color][color=#0000bb]th1[/color][color=#007700].[/color][color=#0000bb]tentruong [/color][color=#007700]= [/color][color=#dd0000]"nguyen thuong hien"[/color][color=#007700]; [/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhan su cua truong hoc nhu sau: " [/color][color=#007700]+ [/color][color=#dd0000]"
" [/color][color=#007700]+ [/color][color=#0000bb]gv1[/color][color=#007700].[/color][color=#0000bb]hotengv [/color][color=#007700]+ [/color][color=#dd0000]"
" [/color][color=#007700]+ [/color][color=#0000bb]hs1[/color][color=#007700].[/color][color=#0000bb]hotenhs [/color][color=#007700]+ [/color][color=#dd0000]"
" [/color][color=#007700]+ [/color][color=#0000bb]tv1[/color][color=#007700].[/color][color=#0000bb]tensach [/color][color=#007700]+ [/color][color=#dd0000]"
" [/color][color=#007700]+ [/color][color=#0000bb]th1[/color][color=#007700].[/color][color=#0000bb]tentruong[/color][color=#007700]); } }[/color] 

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[dungtri2150215]

<div class="bbcodeblock bbcodequote bbcmspoilerblock">
<div class="attribution type"><noscript>package quanlytruonghoc (move your mouse to reveal the content)</noscript>

package quanlytruonghoc (open)
package quanlytruonghoc (close)

</div>
<div class="quotecontent">
<div class="bbcm_spoiler_noscript"><blockquote>

[color=#000000]
package quanlytruonghoc[/color][color=#007700]; public class [/color][color=#0000bb]nhansu [/color][color=#007700]{public [/color][color=#0000bb]string phongban[/color][color=#007700];}[/color] 

[color=#000000]
package quanlytruonghoc[/color][color=#007700]; public class [/color][color=#0000bb]thuvien [/color][color=#007700]{public [/color][color=#0000bb]string tensach[/color][color=#007700];}[/color] 

[color=#000000]
package quanlytruonghoc[/color][color=#007700]; public class [/color][color=#0000bb]truonghoc [/color][color=#007700]{public [/color][color=#0000bb]string tentruong[/color][color=#007700];}[/color] 

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[datnnb502]

hi