What is Classpath?

• Classpath represents the path where JVM can find corresponding classes.

  • source file name: xxx.java –> xxx.class

  • In Windows:

    • C:\work\project1\bin;C:\shared;"D:\My Documents\project1\bin"
      

  • In linux:

    • /usr/shared:/usr/local/bin:/home/liaoxuefeng/bin
      

  • . represents current path

How to Set Classpath?

• In Windows:

  • java -cp .;C:\work\project1\bin;C:\shared abc.xyz.Hello
    

• In linux:

  • java -cp .:/usr/shared:/usr/local/bin:/home/liaoxuefeng/bin
    

What is jar?

• It is a zip format of the compressed file.

• Manually Create:

  • compress to zip format –> modify the postfix to jar

• Use Tools:

  • Maven