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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html><head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>4.3.3. Indentation</title><link rel="stylesheet" href="site.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.65.1"><link rel="home" href="manual.html" title="Jalopy User Manual"><link rel="up" href="printer.html" title="4.3. Printer"><link rel="previous" href="whitespace.html" title="4.3.2. White Space"><link rel="next" href="wrapping.html" title="4.3.4. Wrapping"><link rel="preface" href="dedication.html" title="Dedication"><link rel="preface" href="acknowledge.html" title="Acknowledgements"><link rel="preface" href="introduction.html" title="Introduction"><link rel="part" href="part-core.html" title="Part I. Jalopy core"><link rel="chapter" href="installation.html" title="Chapter 1. Installation"><link rel="chapter" href="build.html" title="Chapter 2. 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Indentation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="whitespace.html">Prev</a> </td><th width="60%" align="center">4.3. Printer</th><td width="20%" align="right"> <a accesskey="n" href="wrapping.html">Next</a></td></tr></table><hr></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="indentation"></a>4.3.3. Indentation</h3></div></div><div></div></div><p>Controls the indentation settings.<a class="indexterm" name="d0e2107"></a></p><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="indentation-general"></a>4.3.3.1. General</h4></div></div><div></div></div><p>Lets you change the general indentation settings.</p><div class="sect4" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="indentation-policy"></a>4.3.3.1.1. Policy</h5></div></div><div></div></div><p>Lets you choose the way lines should be indented.</p><div class="itemizedlist"><ul type="disc"><li><p><a name="indentation-policy-standard"></a>Standard indent</p><p>With standard indentation, lines will be indented according to thecurrent indentation level (Note that the indentation level changes as the blockor parentheses level changes).</p><div class="example"><a name="indentation-method-decl-standard"></a><p class="title"><b>Example 4.30. Method declaration (standard indented)</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">public void severalParameters(String one, int two, String three, StringObject four, AnotherObject five) {...}</pre></td></tr></table></div><p></p><div class="example"><a name="indentation-method-call-standard"></a><p class="title"><b>Example 4.31. Method Call (standard indented)</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">vector.add(new AppServerReference( "RemoteApplicationManager", poa.create_reference_with_id("RemoteApplicationManager".getBytes(), RemoteApplicationManagerHelper.id())));</pre></td></tr></table></div><p></p><div class="example"><a name="indentation-assign-standard"></a><p class="title"><b>Example 4.32. Assignment (standard indented)</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">doublette[InteressentenPflegeController.GEBURTSDATUM] = versichertenResultSetRow[i].field[0] .substring(0, 2) + "." + versichertenResultSetRow[i].field[0].substring(2, 4) + "." + versichertenResultSetRow[i].field[0].substring(4, 6);</pre></td></tr></table></div><p></p></li><li><p><a name="indentation-policy-deep"></a>Deep indent</p><p>Deep indentation means that lines will be indented relative to the currentparentheses or assignment offset. This way consecutive code sections are somewhat easierto recognize at the downside of consuming more horizontal space.</p><div class="example"><a name="indentation-method-decl-deep"></a><p class="title"><b>Example 4.33. Method declaration (deep indented)</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">public void severalParameters(String one, int two, String three, StringObject four, AnotherObject five) { ...}</pre></td></tr></table></div><p></p><div class="example"><a name="indentation-method-call-deep"></a><p class="title"><b>Example 4.34. Method Call (deep indented)</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">this.add(lbPunktzahl, new GridBagLayout(0, 1, 2, 1, 0.0, 0.0, GribBagConstraints.WEST, GribBagConstraints.NONE, new Insets(0, GribBagConstraints.WEST, GribBagConstraints.WEST, GribBagConstraints.WEST), 0, 0));</pre></td></tr></table></div><p></p><div class="example"><a name="indentation-assign-deep"></a><p class="title"><b>Example 4.35. Assignment (deep indented)</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">doublette[Controller.GEBURTSDATUM] = versichertenResultSetRow[i].field[0] .substring(0, 2) + "." + versichertenResultSetRow[i].field[0] .substring(2, 4) + "." + versichertenResultSetRow[i].field[0] .substring(4, 6);</pre></td></tr></table></div><p></p></li></ul></div></div><div class="sect4" lang="en"><div class="titlepage"><div><div><h5 class="title"><a name="indentation-sizes"></a>4.3.3.1.2. Sizes</h5></div></div><div></div></div><a class="indexterm" name="d0e2171"></a><p>Lets you set different indentation sizes.</p><div class="itemizedlist"><p></p><ul type="disc"><li><p><a name="indentation-sizes-general"></a>General indent<a class="indexterm" name="d0e2182"></a></p><p>Specifies the number of spaces to use for general indentation (Studies havefound that 2 to 4 spaces for indentation is optimal)</p><div class="example"><a name="ex-indentation-two-space"></a><p class="title"><b>Example 4.36. 2 space general indent</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">public class Preferences{->private Preferences()->{->}->public static void main(String[] argv)->{->->de.hunsicker.jalopy.swing.PreferencesDialog.main(argv);->}}</pre></td></tr></table></div><p></p><div class="example"><a name="ex-indentation-four-space"></a><p class="title"><b>Example 4.37. 4 space general indent</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">public class Preferences{--->private Preferences()--->{--->}--->public static void main(String[] argv)--->{--->--->de.hunsicker.jalopy.swing.PreferencesDialog.main(argv);--->}}</pre></td></tr></table></div><p></p></li><li><p><a name="indentation-sizes-leading"></a>Leading indent<a class="indexterm" name="d0e2207"></a></p><p>Specifies the number of spaces to prepend before every line printed.</p><div class="example"><a name="ex-indentation-six-leading"></a><p class="title"><b>Example 4.38. 6 space leading indent</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">----->public class Preferences----->{-----> private Preferences()-----> {-----> }-----> public static void main(String[] argv)-----> {-----> de.hunsicker.jalopy.swing.PreferencesDialog.main(argv);-----> }----->}</pre></td></tr></table></div><p></p></li><li><p><a name="indentation-sizes-continuation"></a>Continuation indent<a class="indexterm" name="d0e2226"></a></p><p>Specifies the number of spaces that should be inserted in front ofcontinuation lines, i.e. the consecutive lines in case of a line wrap.</p><div class="example"><a name="ex-indentation-two-continuation"></a><p class="title"><b>Example 4.39. 2 space continuation indent</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">if ((condition1 && condition2) ->|| (condition3 && condition4) ->|| !(condition5 && condition6)) { doSomethingAboutIt();}</pre></td></tr></table></div><p></p><div class="example"><a name="ex-indentation-four-continuation"></a><p class="title"><b>Example 4.40. 4 space continuation indent</b></p><table border="0" bgcolor="#E0E0E0" class="shade"><tr><td><pre class="programlisting">if ((condition1 && condition2) --->|| (condition3 && condition4) --->|| !(condition5 && condition6)) { doSomethingAboutIt();}</pre></td></tr></table></div><p></p></li><li><p><a name="indentation-sizes-trailing"></a>Trailing comment indent<a class="indexterm" name="d0e2251"></a><a class="indexterm" name="d0e2259"></a><a class="indexterm" name="d0e2265"></a></p><p>⌨️ 快捷键说明
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