### Question:
TextUtil { public static String getStringProperty( final Properties props, final String key, final String defval ) { String val = System.getProperties().getProperty( key, System.getenv( StringUtils.replace( key,".","_" ) ) ); if( val == null ) { val = props.getProperty( key ); } if( val == null ) { return defval; } return val.trim(); } private  TextUtil(); static String urlEncodeUTF8( final String text ); static String urlDecodeUTF8( final String utf8 ); static String urlEncode( final String data, final String encoding ); static String urlDecode( final String data, final String encoding ); static String replaceEntities( String src ); static String replaceString( final String orig, final String src, final String dest ); static String replaceString( final String orig, final int start, final int end, final String text ); static String replaceStringCaseUnsensitive( final String orig, final String src, final String dest ); static int parseIntParameter( final String value, final int defvalue ); static int getIntegerProperty( final Properties props, final String key, final int defVal ); static boolean getBooleanProperty( final Properties props, final String key, final boolean defval ); static String getStringProperty( final Properties props, final String key, final String defval ); static String getRequiredProperty( final Properties props, final String key ); static String getCanonicalFilePathProperty( final Properties props, final String key, final String defval ); static boolean isPositive( String val ); static String normalizePostData( final String postData ); static String beautifyString( final String s ); static String beautifyString( final String s, final String space ); static String cleanString( String text, final String allowedChars ); static Properties createProperties( final String[] values ); static int countSections( final String pagedata ); static String getSection( final String pagedata, final int section ); static String repeatString( final String what, final int times ); static String native2Ascii( final String s ); static String toHexString( final byte[] bytes ); static boolean isNumber( String s ); static String generateRandomPassword(); static final int PASSWORD_LENGTH; static final String LEGACY_CHARS_ALLOWED; static final String PUNCTUATION_CHARS_ALLOWED; }### Answer:
@Test public void testGetStringProperty() { final String[] vals = { "foo", " this is a property " }; final Properties props = TextUtil.createProperties(vals); Assertions.assertEquals( "this is a property", TextUtil.getStringProperty( props, "foo", "err" ) ); }