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cmdcompiler-errorslog4jjavac

Where is the correct location to put log4j.jar in my java directory?

I'm trying to compile some .java files in command prompt using "javac *.java -Xlint" and I must include log4j.jar somewhere in my java-jdk directory obviously, because I'm getting "package org.apache.log4j does not exist" error.

Where should I put the log4j.jar file?

Solution

  • Usually projects are built using some build tool like maven or ant.

    But if you want to build it using javac I would suggest you to create the next project structure:

    YourCoolProject
  ├ src
  | └ com
  |   └ companyname
  |     └ Main.java
  ├ lib
  | └ log4j.jar
  └ build

    (you paccage will look like this com.companyname).

    Then you can compile your code using next command (you have to run console in YourCoolProject folder):

    javac -d ./build -classpath "lib/*" -sourcepath src src/com/companyname/Main.java

    In this case everything you add into /lib folder will be automatically included to classpath. Using this command your code will be compiled into /build folder.