Essential Commands
dir |
Lists names of files in current directory (folder) |
dir Hello.* |
Lists all files whose names start with Hello. |
cd C:files |
Changes directory to C:files ("absolute" pathname) |
cd myfiles |
Changes directory to myfiles subdirectory of current directory ("relative" pathname) |
cd .. |
Changes directory to "parent" of current directory |
notepad Hello.java |
MS-DOS text editor, used to create and edit ASCII textfiles |
type Hello.java |
Displays contents of ASCII textfile on screen |
exit |
Ends command interpreter, makes console window go away... |
Useful File Management Commands
copy Test1.java Test2.java |
Copies contents of Test1.java to new file Test2.java |
ren Test1.java Test2.java |
Renames Test1.java to Test2.java |
del Test1.java |
Deletes Test1.java (Be careful with this command...) |
del Test1.* |
Deletes all files with Test1 prefix (Be even more careful with this command...) |
mkdir playpen |
Creates new directory playpen as subdirectory of current directory |
rmdir playpen |
Removes directory playpen (must be empty) |
Commands for Compiling and Running Java Applications
Note: if the commands in this table are not recognized by the MS-DOS command interpreter on your system, try using the path commands listed below...
javac Hello.java |
Compiles Java source file Hello.java (ASCII textfile),
produces bytecode file Hello.class (binary file) |
java Hello |
"Runs" Java application: starts Java Virtual Machine (interpreter),
which executes Java bytecode instructions in file Hello.class |
Using javadoc to Document Java Classes
Note: if the commands in this table are not recognized by the MS-DOS command interpreter on your system, try using the path commands listed below...
javadoc Cat |
Generates Web document Cat.html, containing description of Cat class. Complete documentation requires inclusion of javadoc comments (/** .. */) in source code. |
Jar (Java Archive) Commands
Note: if the commands in this table are not recognized by the MS-DOS command interpreter on your system, try using the path commands listed below...
jar cf Pets.jar Pets |
Creates Pets.jar, containing compressed version of Pets folder and all its contents |
jar tf Pets.jar |
Displays list of zipped files in Pets.jar |
jar xf Pets.jar |
Extracts (unzips) entire contents of Pets.jar, preserving any directory structures |
Commands for Manipulating Environment Variables
path |
Displays current value of PATH environment variable (list of directories containing DOS command programs) |
set path=C:Program FilesJavajdk1.6.0_15bin;%PATH% |
Adds named directory (a JDK system directory in this example) to current PATH environment variable (applies only to current session). |
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