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A Java Optimization Framework
There is a newer version: 4.6.0
package soot.jbco;

/*-
 * #%L
 * Soot - a J*va Optimization Framework
 * %%
 * Copyright (C) 1997 - 1999 Raja Vallee-Rai
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import java.util.Iterator;
import java.util.Map;

import soot.Body;
import soot.BodyTransformer;
import soot.PackManager;
import soot.PatchingChain;
import soot.Transform;
import soot.Unit;
import soot.tagkit.LineNumberTag;

public class LineNumberGenerator {

  BafLineNumberer bln = new BafLineNumberer();

  public static void main(String[] argv) {
    // if you do not want soot to output new class files, run with comman line option "-f n"

    // if you want the source code line numbers for jimple statements, use this:
    PackManager.v().getPack("jtp").add(new Transform("jtp.lnprinter", new LineNumberGenerator().bln));

    // if you want the source code line numbers for baf instructions, use this:
    PackManager.v().getPack("bb").add(new Transform("bb.lnprinter", new LineNumberGenerator().bln));

    soot.Main.main(argv);
  }

  class BafLineNumberer extends BodyTransformer {
    protected void internalTransform(Body b, String phaseName, Map options) {

      System.out.println("Printing Line Numbers for: " + b.getMethod().getSignature());

      PatchingChain units = b.getUnits(); // get the method code
      Iterator it = units.iterator();
      while (it.hasNext()) { // for each jimple statement or baf instruction
        Unit u = (Unit) it.next();
        if (u.hasTag("LineNumberTag")) { // see if a LineNumberTag exists (it will if you use -keep-line-number)
          LineNumberTag tag = (LineNumberTag) u.getTag(("LineNumberTag"));
          System.out.println(u + " has Line Number: " + tag.getLineNumber()); // print out the unit and line number
        } else {
          System.out.println(u + " has no Line Number");
        }
      }

      System.out.println("\n");
    }
  }
}