Java executes the Windows CMD command method

This article illustrates how Java executes the CMD command under Windows. Share with you for your reference.

The specific implementation code is as follows:

//Gets the runtime 

Runtime rt = Runtime.getRuntime();

//Gets the process 

Process p = rt.exec(String[] cmdarray);//Or Process p = rt.exec(String CMD); < br / >
//If p is not empty, clear 

if(null!=p){destory

　　p.destory();

　　p=null;

}

Such as:

Runtime rt = Runtime.getRuntime();

Process p = rt.exec("cmd.exe /c shutdown -a");

System.out.println(p.toString());

CMD /c dir is to close the command window after executing the dir command.

CMD /k dir is to execute the dir command without closing the command window.

CMD /c start dir opens a new window and executes the dir command. The original window closes.

CMD /k start dir will open a new window and execute the dir command. The original window will not close.

You can use CMD /? See help information.

Supplement:

Taken the CMD command to end
1. Gpedit. MSC -- group policy
2. Sndrec32 -- recorder
3. Nslookup-- IP address detector
4. Explorer -- open explorer
5. Logoff -- logoff order
Tsshutdn --60 seconds countdown shutdown command
7. Lusrmgr.msc -- native users and groups
8. Services. MSC -- local service Settings
9. Oobe /msoobe /a-- check whether XP is active
10. Notepad -- open notepad
11. Cleanmgr -- garbage disposal
12. Net start messenger-- start a messenger service
13. Compmgmt. MSC -- computer management
14. Net stop messenger-- stop messenger service
Conf -- start netmeeting
16. Dvdplay --DVD player
Charmap -- start the charmap table
18. Diskmgmt.msc -- disk management utility
19. Calc -- start the calculator
20. DFRG. MSC -- disk defragmenter
21. CHKDSK. Exe -- CHKDSK disk check
22. Devmgmt. MSC -- device manager
23. Regsvr32 /u *.dll- stops the DLL file from running
24. Drwtsn32 -- system doctor
25. Rononce-p -- power off in 15 seconds
26. Dxdiag -- check DirectX information
27. Regedt32 -- registry editor
28. Msconfig.exe-- system configuration utility
29. Rsop. MSC -- group policy result set
30. Mem. Exe -- displays memory usage
31. Regedit. Exe -- registry
32. Winchat --XP comes with its own LAN
33. Progman -- program manager
Winmsd -- system information
35. Perfmon.msc -- computer performance monitoring program
36. Winver -- check the Windows version
37. SFC /scannow-- scan for errors and recover
38. Taskmgr -- task manager (2000 / xp / 2003
39. Winver -- check the Windows version
40. Wmimgmt.msc -- open Windows management architecture (WMI)
41. Wupdmgr -- Windows update program
42. Wscript -- Windows script host Settings
Write -- write-- write-- write-- write-- write-- write-- write-- write--
44. Winmsd -- system information
45. Wiaacmgr -- scanner and camera wizard
46. Winchat --XP comes with its own LAN
47. Mem. Exe -- displays memory usage
48. Msconfig.exe-- system configuration utility
49. Mplayer2 -- simple widnows media player
Mspaint -- draw a board
51. MSTSC -- remote desktop connection
52. Mplayer2 -- media player
Magnify - magnify utility
54. MMC -- open the console
55. Mobsync -- sync commands
Dxdiag -- check DirectX information
57. Drwtsn32 -- system doctor
58. Devmgmt. MSC -- device manager
DFRG. MSC -- disk defragmenter
60. Diskmgmt.msc -- disk management utility
Dcomcnfg -- open system component service
62. Ddeshare -- turn on DDE sharing Settings
63. Dvdplay --DVD player
64. Net stop messenger-- stop messenger service
65. Net start messenger- to start a messenger service
66. Notepad -- open notepad
67. Nslookup -- tool wizard for network management
Ntbackup -- system backup and restore
69. Denise -- screen narrator
70. Ntmsmgr.msc -- mobile storage manager
Ntmsoprq.msc -- mobile storage administrator action request
72. Netstat -an-- (TC) command checks the interface
73. Syncapp -- create a briefcase
74. Sysedit -- system configuration editor
75. Sigverif -- file signature verification program
76. Sndrec32 -- recorder
77. Shrpubw -- create a Shared folder
78. Secpol.msc -- local security policy
Syskey - system encryption, once the encryption can not be unlocked, protect Windows xp system double password
80. Services. MSC -- local service Settings
81. Sndvol32-- volume control program
Sfc. exe-- system file inspector
83. SFC /scannow-- Windows file protection
Tsshutdn --60 seconds countdown shutdown command
85. Tourstart -- introduction to xp (roaming xp program after installation)
86. Taskmgr -- task manager
87. Eventvwr -- event viewer
Eudcedit -- word program
89. Explorer -- open explorer
90. Packager -- object wrapper
91. Perfmon.msc -- computer performance monitoring program
92. Progman -- program manager
93. Regedit. Exe -- registry
94. Rsop. MSC -- group policy result set
Regedt32 -- registry editor
96. Rononce-p -- power off in 15 seconds
97. Regsvr32 /u *.dll- stops the DLL file from running
98. Regsvr32 /u zipfldr.dll-- unzip support
99. Cmd.exe --CMD command prompt
CHKDSK. Exe -- CHKDSK disk check
101.cermgr. MSC -- certificate management utility
102. Calc -- start the calculator
103. Charmap -- start the charmap table
Cliconfg --SQL SERVER client network utility
Clipbrd-- clipboard viewer
106. Conf -- launch netmeeting
107. Compmgmt. MSC -- computer management
108.cleanmgr -- garbage disposal
109. Ciadv. MSC -- index service program
110. Osk -- open the on-screen keyboard
111. Odbcad32 --ODBC data source manager
112. oobe/msoobe/a -- check if XP is active
113. Lusrmgr.msc -- native users and groups
114. Logoff -- log out order
115. Iexpress -- trojans bundled tools, the system comes with
116. Nslookup-- IP address detector
117. Fsmgmt.msc -- Shared folder manager
118. Utilman -- utility manager
Gpedit.msc -- group policy
120. Explorer -- open explorer
Javac actually executes but it doesn't print the execution because you don't print the execution
If you execute

Runtime.getRuntime.exec("cmd");

I don't see the results
Because it is not executed in a Java program but on the operating system
You can do this

Runtime.getRuntime.exec("cmd /c start javac ");

You can see a command line window.

I hope this article has been helpful to your Java programming.