84 lines
6.0 KiB
HTML
84 lines
6.0 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Step through Java programs to debug" />
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<meta name="abstract" content="You can step through your program while debugging. You can either step over or step into other functions. Java programs and native methods can use the step function." />
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<meta name="description" content="You can step through your program while debugging. You can either step over or step into other functions. Java programs and native methods can use the step function." />
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<meta name="DC.Relation" scheme="URI" content="debugpro.htm" />
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<meta name="DC.Relation" scheme="URI" content="evalvar.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="stepping" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Step through Java programs to debug</title>
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</head>
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<body id="stepping"><a name="stepping"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Step through Java programs to debug</h1>
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<div><p>You can step through your program while debugging. You can either
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step over or step into other functions. Java™ programs and native methods can use
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the step function.</p>
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<p>When the program source first displays, you can start stepping. The program
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stops before running the first statement. Press F10 (Step). Continue to press
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F10 (Step) to step through the program. Press F22 (Step into) to step into
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any function that your program calls. You can also start stepping anytime
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a breakpoint is hit. For information about setting breakpoints, see <a href="setbreak.htm">Set breakpoints</a>.</p>
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<pre>+--------------------------------------------------------------------------------+
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| Display Module Source |
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|Current thread: 00000019 Stopped thread: 00000019 |
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|Class file name: Hellod |
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|35 public static void main(String[] args) |
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|36 { |
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|37 int i,j,h,B[],D[][]; |
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|38 Hellod A=new Hellod(); |
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|39 A.myHellod = A; |
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|40 Hellod C[]; |
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|41 C = new Hellod[5]; |
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|42 for (int counter=0; counter<2; counter++) { |
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|43 C[counter] = new Hellod(); |
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|44 C[counter].myHellod = C[counter]; |
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|45 } |
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|46 C[2] = A; |
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|47 C[0].myString = null; |
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|48 C[0].myHellod = null; |
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|49 A.method1(); |
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|Debug . . . |
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|F3=End program F6=Add/Clear breakpoint F10=Step F11=Display variable |
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|F12=Resume F17=Watch variable F18=Work with watch F24=More key |
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|Step completed at line 42 in thread 00000019 |
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+--------------------------------------------------------------------------------+</pre>
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<p>To stop stepping and continue running the program, press F12 (Resume).</p>
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<p>For more information about stepping, see <a href="../books/sc092712.pdf" target="_blank">WebSphere<sup>®</sup> Development Studio: ILE C/C++ Programmer's
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Guide, SC09-2712</a> <img src="wbpdf.gif" alt="Link to PDF." /> and
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online help information.</p>
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<p>For information about evaluating variables when a program stops running
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at a step, see <a href="evalvar.htm">Evaluate variables in Java programs</a>.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="evalvar.htm">Evaluate variables in Java programs</a></strong><br />
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There are two ways to evaluate a variable when a program stops running at a breakpoint or step.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="debugpro.htm" title="The easiest way to debug Java programs that run on your iSeries server is to use the IBM iSeries System Debugger. IBM iSeries System Debugger provides a graphical user interface that enables you to more easily use the debugging capabilities of your iSeries server.">Debug a Java program</a></div>
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</div>
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</div>
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</body>
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</html>
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