CODEWITHSUNDEEP
javacommand-line
Umbra Aeternitatis
Umbra Aeternitatis

Reputation: 127

Java list class methods from command line

Is it possible to get a list of methods of the class from command line?

In Eclipse or Intellij IDEA one usually hits ctrl + space for autocompletion menu. It's cool, but I wish to get something alike from bash.

E.g. I have a class that extends a class (or classes if the parent also extends a class) and implements a couple of interfaces - so I need to know which methods I'm able to use.

P.S. I use vim 'cause I have memory limitations to use entire IDE.

Upvotes: 2

Views: 3076

Answers (2)

Andreas
Andreas

Reputation: 159106

You can use the java disassembler: javap:

Example

Compile the following DocFooter class:

import java.awt.*;
import java.applet.*;
 
public class DocFooter extends Applet {
        String date;
        String email;
 
        public void init() {
                resize(500,100);
                date = getParameter("LAST_UPDATED");
                email = getParameter("EMAIL");
        }
 
        public void paint(Graphics g) {
                g.drawString(date + " by ",100, 15);
                g.drawString(email,290,15);
        }
}

The output from the javap DocFooter.class command yields the following:

Compiled from "DocFooter.java"
public class DocFooter extends java.applet.Applet {
  java.lang.String date;
  java.lang.String email;
  public DocFooter();
  public void init();
  public void paint(java.awt.Graphics);
}

Upvotes: 3

Erik Pragt
Erik Pragt

Reputation: 14637

While I would advice spending a bit of money on more RAM, you could using ctags instead. I'm not sure if it's up to date with Java 7/8/9 features, but here's a blog describing how to use it: http://andrewradev.com/2011/06/08/vim-and-ctags/

Upvotes: 0

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