For loop: all conditions
/* * file: ForLoops.java * package: java2s.hcj.review * * This software is granted under the terms of the Common Public License, * CPL, which may be found at the following URL: * http://www-124.ibm.com/developerworks/oss/CPLv1.0.htm * * Copyright(c) 2003-2005 by the authors indicated in the @author tags. * All Rights are Reserved by the various authors. * ########## DO NOT EDIT ABOVE THIS LINE ########## */ import java.util.Iterator; import java.util.Properties; import java.util.Set; /** * Syntax check file for for loops. * * @author <a href="mailto:[email protected] ">Robert (Kraythe) Simmons jr.</a> */ public class ForLoops { /** * A wordy for loop. */ public static void forLong () { Properties props = System.getProperties () ; Iterator iter = props.keySet () .iterator () ; String key = null ; while ( iter.hasNext ()) { key = key = ( String ) iter.next () ; System.out.println ( key + "=" + System.getProperty ( key )) ; } } /** * A completely safe and short for loop. */ public static void forSafe () { Properties props = System.getProperties () ; Iterator iter = props.keySet () .iterator () ; for ( String key = null ; iter.hasNext () ; key = ( String ) iter.next ()) { System.out.println ( key + "=" + System.getProperty ( key )) ; } } /** * A short for loop. */ public static void forShort () { Properties props = System.getProperties () ; for ( Iterator iter = props.keySet () .iterator () ; iter.hasNext () ; ) { String key = ( String ) iter.next () ; System.out.println ( key + "=" + System.getProperty ( key )) ; } } /** * A simple for loop. * * @param args * Arguments to the loop. */ public static void forSimple ( final String [] args ) { for ( int idx = 0 ; idx < args.length; idx++ ) { // .. do something. } } /** * A weird for loop. */ public static void forWeird () { boolean exit = false ; int idx = 0 ; for ( System.setProperty ( "user.sanity" , "minimal" ) ; exit == false ; System.out.println ( System .currentTimeMillis ())) { // do some code. idx++; if ( idx == 10 ) { exit = true ; } } } /** * Demo method. * * @param args * Command line args. */ public static void main ( String [] args ) { forWeird () ; } /** * A for loop bug. * * @param customKeys * __UNDOCUMENTED__ */ public static void propsDump ( final Set customKeys ) { Properties props = System.getProperties () ; Iterator iter = props.keySet () .iterator () ; String key = null ; System.out.println ( "All Properties:" ) ; while ( iter.hasNext ()) { key = ( String ) iter.next () ; System.out.println ( key + "=" + System.getProperty ( key )) ; } System.out.println ( "Custom Properties:" ) ; iter = customKeys.iterator () ; while ( iter.hasNext ()) { System.out.println ( key + "=" + System.getProperty ( key )) ; } } } /* ########## End of File ########## */
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