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Thread: java commands

  1. #1
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    Default java commands

    Hi Everyone,

    Is there any command to find all the classes inside a package? If so let me know...
    eg: To find all the properties and methods inside a class String we use "javap java.lang.String"

    Thanks and Regards,
    Sunil


  2. #2
    Member Ada Lovelace's Avatar
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    Default Re: java commands

    Well to import all the classes of a library you would use,
    for example:

    import.java.util.*;

    Once you have the import, you can view all the methods by just
    choosing one with the '.' operator after the util class.

    Wishes Ada xx
    If to Err is human - then programmers are most human of us all.
    "The Analytical Engine offers a new, a vast, and a powerful language . . .
    for the purposes of mankind
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    Augusta Ada Byron, Lady Lovelace (1851)

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    sunilhs (August 21st, 2014)

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    Default Re: java commands

    Initially I would like to thanks for your answer. As you said, if i import any package in IDE it will show me suggestions as soon as i use '.' operator. But my problem is if I am using a text editor to write a program and want to compile and run it in a command prompt then how can I know the classes which comes under "util" package. Is there any command like "javap"?

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    Super Moderator Norm's Avatar
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    Default Re: java commands

    One way would be to open the src.zip file that comes with the JDK and look in the folder for the package you are interested in.
    If you don't understand my answer, don't ignore it, ask a question.

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    sunilhs (August 21st, 2014)

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    Default Re: java commands

    Do you have access to the API? For example, the java.util api: java.util (Java Platform SE 7 )
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    Norm (August 21st, 2014)

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    Default Re: java commands

    Of course. The packages are listed In the upper left corner of the page for the API doc at:
    Java Platform SE 7
    If you don't understand my answer, don't ignore it, ask a question.

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