@Test public void testTrimToNull() { assertEquals("bob", TextUtil.trimToNull("bob")); assertEquals("carl", TextUtil.trimToNull(" carl\t ")); assertNull(TextUtil.trimToNull(" \t ")); assertNull(TextUtil.trimToNull("")); assertNull(TextUtil.trimToNull(null)); }
public static String trimToNull(String source) { if (source == null) return null; source = source.trim(); if (source.length() > 0) { return source; } else { return null; } }
TextUtil { public static String trimToNull(String source) { if (source == null) return null; source = source.trim(); if (source.length() > 0) { return source; } else { return null; } } }
TextUtil { public static String trimToNull(String source) { if (source == null) return null; source = source.trim(); if (source.length() > 0) { return source; } else { return null; } }  }
TextUtil { public static String trimToNull(String source) { if (source == null) return null; source = source.trim(); if (source.length() > 0) { return source; } else { return null; } }  static void println(PrintStream out, String pattern, Object... args); static void println(PrintStream out, int maxLineLength, String linePrefix, String pattern, Object... args); static void println(PrintStream out, int maxLineLength, String linePrefix, String content); static String format(String pattern, Object... args); static String repeat(String base, int repeat); static String padRight(String base, String repeatString, int totalLength); static String trimToNull(String source); static String nullToEmpty(String source); static String trimToEmpty(String source); static boolean toBoolean(String value); static List<String> wrap(String in, int length, String prefix, String wrappedLineIndent); static List<String> wrap(String in, int length); static int findFirstInstanceOf(String toBeSearched, int searchFrom, String... toBeFound); static int findLastInstanceOf(String toBeSearched, int searchFrom, String... toBeFound); static String escapeXml(String text); }
TextUtil { public static String trimToNull(String source) { if (source == null) return null; source = source.trim(); if (source.length() > 0) { return source; } else { return null; } }  static void println(PrintStream out, String pattern, Object... args); static void println(PrintStream out, int maxLineLength, String linePrefix, String pattern, Object... args); static void println(PrintStream out, int maxLineLength, String linePrefix, String content); static String format(String pattern, Object... args); static String repeat(String base, int repeat); static String padRight(String base, String repeatString, int totalLength); static String trimToNull(String source); static String nullToEmpty(String source); static String trimToEmpty(String source); static boolean toBoolean(String value); static List<String> wrap(String in, int length, String prefix, String wrappedLineIndent); static List<String> wrap(String in, int length); static int findFirstInstanceOf(String toBeSearched, int searchFrom, String... toBeFound); static int findLastInstanceOf(String toBeSearched, int searchFrom, String... toBeFound); static String escapeXml(String text); static final String[] EMPTY_STRING_ARRAY; static final List<String> EMPTY_STRING_LIST; static final String NULL_PRINT; static final String SECOND_LINE_INDENT; }