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courses:mapreduce-tutorial:step-21 [2012/01/26 23:55] straka |
courses:mapreduce-tutorial:step-21 [2012/01/31 11:18] (current) straka |
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| - Create a ''Makefile'' containing <file Makefile Makefile>include /net/projects/hadoop/java/Makefile</file> | - Create a ''Makefile'' containing <file Makefile Makefile>include /net/projects/hadoop/java/Makefile</file> | ||
| - | When typing ''make'', every Java file is compiled (with the Hadoop library and some extra classes) to a jar file. It is of course possible to compile just selected sources using ''make file1.jar file2.jar''. | + | ===== Compiling ===== |
| + | |||
| + | When typing ''make'', every Java file is compiled (with the Hadoop library and some extra classes) to a jar file. It is of course possible to compile just selected sources using: | ||
| + | make ClassName1.jar ClassName2.jar | ||
| + | or | ||
| + | make -f /net/projects/hadoop/java/Makefile ClassName1.jar | ||
| Command ''make clean'' remove for every Java file its jar file and subdirectory with compiled classes. | Command ''make clean'' remove for every Java file its jar file and subdirectory with compiled classes. | ||
| ===== Exercise ===== | ===== Exercise ===== | ||
| - | Create a directory and a ''Makefile'' as described and download {{:courses:mapreduce-tutorial:step-21.txt|WordCount.java}}. Try compiling it using ''make''. | + | Create a directory and a ''Makefile'' as described and download {{:courses:mapreduce-tutorial:step-21.txt|CompileTest.java}}. Try compiling it using ''make''. |
| ===== Using VIM ===== | ===== Using VIM ===== | ||
| If you like using VIM, there is a special configuration available for editing Hadoop java files. Just execute | If you like using VIM, there is a special configuration available for editing Hadoop java files. Just execute | ||
| - | /net/projects/hadoop/vim | + | /net/projects/hadoop/bin/vim |
| instead of ''vim''. | instead of ''vim''. | ||
| Line 24: | Line 29: | ||
| * Pressing F11 / F12 goes to previous / next compilation error, if there are any. | * Pressing F11 / F12 goes to previous / next compilation error, if there are any. | ||
| * Key F8 opens a //taglist// -- small window with classes, fields and functions in the current file. | * Key F8 opens a //taglist// -- small window with classes, fields and functions in the current file. | ||
| + | * Pressing ''\\'' comments/uncomments current (or selected) line. | ||
| + | |||
| + | ---- | ||
| + | <html> | ||
| + | <table style="width:100%"> | ||
| + | <tr> | ||
| + | <td style="text-align:left; width: 33%; "></html><html></td> | ||
| + | <td style="text-align:center; width: 33%; "></html>[[.|Overview]]<html></td> | ||
| + | <td style="text-align:right; width: 33%; "></html>[[step-22|Step 22]]: Optional – Setting Eclipse.<html></td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | </html> | ||