private static void testSysOut(String fs, String exp, Object... args) {
FileOutputStream fos = null;
FileInputStream fis = null;
try {
PrintStream saveOut = System.out;
fos = new FileOutputStream("testSysOut");
System.setOut(new PrintStream(fos));
System.out.format(Locale.US, fs, args);
fos.close();
fis = new FileInputStream("testSysOut");
byte[] ba = new byte[exp.length()];
int len = fis.read(ba);
String got = new String(ba);
if (len != ba.length) fail(fs, exp, got);
ck(fs, exp, got);
System.setOut(saveOut);
} catch (FileNotFoundException ex) {
fail(fs, ex.getClass());
} catch (IOException ex) {
fail(fs, ex.getClass());
} finally {
try {
if (fos != null) fos.close();
if (fis != null) fis.close();
} catch (IOException ex) {
fail(fs, ex.getClass());
}
}
}
public static void test() {
TimeZone.setDefault(TimeZone.getTimeZone("GMT-0800"));
// Any characters not explicitly defined as conversions, date/time
// conversion suffixes, or flags are illegal and are reserved for
// future extensions. Use of such a character in a format string will
// cause an UnknownFormatConversionException or
// UnknownFormatFlagsException to be thrown.
tryCatch("%q", UnknownFormatConversionException.class);
tryCatch("%t&", UnknownFormatConversionException.class);
tryCatch("%&d", UnknownFormatConversionException.class);
tryCatch("%^b", UnknownFormatConversionException.class);
// ---------------------------------------------------------------------
// Formatter.java class javadoc examples
// ---------------------------------------------------------------------
test(Locale.FRANCE, "e = %+10.4f", "e = +2,7183", Math.E);
test("%4$2s %3$2s %2$2s %1$2s", " d c b a", "a", "b", "c", "d");
test(
"Amount gained or lost since last statement: $ %,(.2f",
"Amount gained or lost since last statement: $ (6,217.58)", (new BigDecimal("-6217.58")));
Calendar c = new GregorianCalendar(1969, JULY, 20, 16, 17, 0);
testSysOut("Local time: %tT", "Local time: 16:17:00", c);
test(
"Unable to open file '%1$s': %2$s",
"Unable to open file 'food': No such file or directory",
"food",
"No such file or directory");
Calendar duke = new GregorianCalendar(1995, MAY, 23, 19, 48, 34);
duke.set(Calendar.MILLISECOND, 584);
test("Duke's Birthday: %1$tB %1$te, %1$tY", "Duke's Birthday: May 23, 1995", duke);
test("Duke's Birthday: %1$tB %1$te, %1$tY", "Duke's Birthday: May 23, 1995", duke.getTime());
test(
"Duke's Birthday: %1$tB %1$te, %1$tY",
"Duke's Birthday: May 23, 1995", duke.getTimeInMillis());
test("%4$s %3$s %2$s %1$s %4$s %3$s %2$s %1$s", "d c b a d c b a", "a", "b", "c", "d");
test("%s %s %<s %<s", "a b b b", "a", "b", "c", "d");
test("%s %s %s %s", "a b c d", "a", "b", "c", "d");
test("%2$s %s %<s %s", "b a a b", "a", "b", "c", "d");
// ---------------------------------------------------------------------
// %b
//
// General conversion applicable to any argument.
// ---------------------------------------------------------------------
test("%b", "true", true);
test("%b", "false", false);
test("%B", "TRUE", true);
test("%B", "FALSE", false);
test("%b", "true", Boolean.TRUE);
test("%b", "false", Boolean.FALSE);
test("%B", "TRUE", Boolean.TRUE);
test("%B", "FALSE", Boolean.FALSE);
test("%14b", " true", true);
test("%-14b", "true ", true);
test("%5.1b", " f", false);
test("%-5.1b", "f ", false);
test("%b", "true", "foo");
test("%b", "false", (Object) null);
// Boolean.java hardcodes the Strings for "true" and "false", so no
// localization is possible.
test(Locale.FRANCE, "%b", "true", true);
test(Locale.FRANCE, "%b", "false", false);
// If you pass in a single array to a varargs method, the compiler
// uses it as the array of arguments rather than treating it as a
// single array-type argument.
test("%b", "false", (Object[]) new String[2]);
test("%b", "true", new String[2], new String[2]);
int[] ia = {1, 2, 3};
test("%b", "true", ia);
// ---------------------------------------------------------------------
// %b - errors
// ---------------------------------------------------------------------
tryCatch("%#b", FormatFlagsConversionMismatchException.class);
tryCatch("%-b", MissingFormatWidthException.class);
// correct or side-effect of implementation?
tryCatch("%.b", UnknownFormatConversionException.class);
tryCatch("%,b", FormatFlagsConversionMismatchException.class);
// ---------------------------------------------------------------------
// %c
//
// General conversion applicable to any argument.
// ---------------------------------------------------------------------
test("%c", "i", 'i');
test("%C", "I", 'i');
test("%4c", " i", 'i');
test("%-4c", "i ", 'i');
test("%4C", " I", 'i');
test("%-4C", "I ", 'i');
test("%c", "i", new Character('i'));
test("%c", "H", (byte) 72);
test("%c", "i", (short) 105);
test("%c", "!", (int) 33);
test("%c", "\u007F", Byte.MAX_VALUE);
test("%c", new String(Character.toChars(Short.MAX_VALUE)), Short.MAX_VALUE);
test("%c", "null", (Object) null);
// ---------------------------------------------------------------------
// %c - errors
// ---------------------------------------------------------------------
tryCatch("%c", IllegalFormatConversionException.class, Boolean.TRUE);
tryCatch("%c", IllegalFormatConversionException.class, (float) 0.1);
tryCatch("%c", IllegalFormatConversionException.class, new Object());
tryCatch("%c", IllegalFormatCodePointException.class, Byte.MIN_VALUE);
tryCatch("%c", IllegalFormatCodePointException.class, Short.MIN_VALUE);
tryCatch("%c", IllegalFormatCodePointException.class, Integer.MIN_VALUE);
tryCatch("%c", IllegalFormatCodePointException.class, Integer.MAX_VALUE);
tryCatch("%#c", FormatFlagsConversionMismatchException.class);
tryCatch("%,c", FormatFlagsConversionMismatchException.class);
tryCatch("%(c", FormatFlagsConversionMismatchException.class);
tryCatch("%$c", UnknownFormatConversionException.class);
tryCatch("%.2c", IllegalFormatPrecisionException.class);
// ---------------------------------------------------------------------
// %s
//
// General conversion applicable to any argument.
// ---------------------------------------------------------------------
test("%s", "Hello, Duke", "Hello, Duke");
test("%S", "HELLO, DUKE", "Hello, Duke");
test("%20S", " HELLO, DUKE", "Hello, Duke");
test("%20s", " Hello, Duke", "Hello, Duke");
test("%-20s", "Hello, Duke ", "Hello, Duke");
test("%-20.5s", "Hello ", "Hello, Duke");
test("%s", "null", (Object) null);
StringBuffer sb = new StringBuffer("foo bar");
test("%s", sb.toString(), sb);
test("%S", sb.toString().toUpperCase(), sb);
// ---------------------------------------------------------------------
// %s - errors
// ---------------------------------------------------------------------
tryCatch("%-s", MissingFormatWidthException.class);
tryCatch("%--s", DuplicateFormatFlagsException.class);
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0);
tryCatch("%#s", FormatFlagsConversionMismatchException.class, 0.5f);
tryCatch("%#s", FormatFlagsConversionMismatchException.class, "hello");
tryCatch("%#s", FormatFlagsConversionMismatchException.class, null);
// ---------------------------------------------------------------------
// %h
//
// General conversion applicable to any argument.
// ---------------------------------------------------------------------
test("%h", Integer.toHexString("Hello, Duke".hashCode()), "Hello, Duke");
test("%10h", " ddf63471", "Hello, Duke");
test("%-10h", "ddf63471 ", "Hello, Duke");
test("%-10H", "DDF63471 ", "Hello, Duke");
test("%10h", " 402e0000", 15.0);
test("%10H", " 402E0000", 15.0);
// ---------------------------------------------------------------------
// %h - errors
// ---------------------------------------------------------------------
tryCatch("%#h", FormatFlagsConversionMismatchException.class);
// ---------------------------------------------------------------------
// flag/conversion errors
// ---------------------------------------------------------------------
tryCatch("%F", UnknownFormatConversionException.class);
tryCatch("%#g", FormatFlagsConversionMismatchException.class);
// ---------------------------------------------------------------------
// BigInteger - errors
// ---------------------------------------------------------------------
tryCatch("%f", IllegalFormatConversionException.class, new BigInteger("1"));
// ---------------------------------------------------------------------
// %d - BigInteger
// ---------------------------------------------------------------------
test("%d", "null", (Object) null);
test("%d", "1234567", new BigInteger("1234567", 10));
test("%,d", "1,234,567", new BigInteger("1234567", 10));
test(Locale.FRANCE, "%,d", "1\u00a0234\u00a0567", new BigInteger("1234567", 10));
test("%,d", "-1,234,567", new BigInteger("-1234567", 10));
test("%(d", "1234567", new BigInteger("1234567", 10));
test("%(d", "(1234567)", new BigInteger("-1234567", 10));
test("% d", " 1234567", new BigInteger("1234567", 10));
test("% d", "-1234567", new BigInteger("-1234567", 10));
test("%+d", "+1234567", new BigInteger("1234567", 10));
test("%+d", "-1234567", new BigInteger("-1234567", 10));
test("%010d", "0001234567", new BigInteger("1234567", 10));
test("%010d", "-001234567", new BigInteger("-1234567", 10));
test("%(10d", " (1234567)", new BigInteger("-1234567", 10));
test("%+d", "+1234567", new BigInteger("1234567", 10));
test("%+d", "-1234567", new BigInteger("-1234567", 10));
test("%-10d", "1234567 ", new BigInteger("1234567", 10));
test("%-10d", "-1234567 ", new BigInteger("-1234567", 10));
// ---------------------------------------------------------------------
// %o - BigInteger
// ---------------------------------------------------------------------
test("%o", "null", (Object) null);
test("%o", "1234567", new BigInteger("1234567", 8));
test("%(o", "1234567", new BigInteger("1234567", 8));
test("%(o", "(1234567)", new BigInteger("-1234567", 8));
test("% o", " 1234567", new BigInteger("1234567", 8));
test("% o", "-1234567", new BigInteger("-1234567", 8));
test("%+o", "+1234567", new BigInteger("1234567", 8));
test("%+o", "-1234567", new BigInteger("-1234567", 8));
test("%010o", "0001234567", new BigInteger("1234567", 8));
test("%010o", "-001234567", new BigInteger("-1234567", 8));
test("%(10o", " (1234567)", new BigInteger("-1234567", 8));
test("%+o", "+1234567", new BigInteger("1234567", 8));
test("%+o", "-1234567", new BigInteger("-1234567", 8));
test("%-10o", "1234567 ", new BigInteger("1234567", 8));
test("%-10o", "-1234567 ", new BigInteger("-1234567", 8));
test("%#10o", " 01234567", new BigInteger("1234567", 8));
test("%#10o", " -01234567", new BigInteger("-1234567", 8));
// ---------------------------------------------------------------------
// %x - BigInteger
// ---------------------------------------------------------------------
test("%x", "null", (Object) null);
test("%x", "1234567", new BigInteger("1234567", 16));
test("%(x", "1234567", new BigInteger("1234567", 16));
test("%(x", "(1234567)", new BigInteger("-1234567", 16));
test("% x", " 1234567", new BigInteger("1234567", 16));
test("% x", "-1234567", new BigInteger("-1234567", 16));
test("%+x", "+1234567", new BigInteger("1234567", 16));
test("%+x", "-1234567", new BigInteger("-1234567", 16));
test("%010x", "0001234567", new BigInteger("1234567", 16));
test("%010x", "-001234567", new BigInteger("-1234567", 16));
test("%(10x", " (1234567)", new BigInteger("-1234567", 16));
test("%+x", "+1234567", new BigInteger("1234567", 16));
test("%+x", "-1234567", new BigInteger("-1234567", 16));
test("%-10x", "1234567 ", new BigInteger("1234567", 16));
test("%-10x", "-1234567 ", new BigInteger("-1234567", 16));
test("%#10x", " 0x1234567", new BigInteger("1234567", 16));
test("%#10x", "-0x1234567", new BigInteger("-1234567", 16));
test("%#10X", " 0X1234567", new BigInteger("1234567", 16));
test("%#10X", "-0X1234567", new BigInteger("-1234567", 16));
test("%X", "1234567A", new BigInteger("1234567a", 16));
test("%X", "-1234567A", new BigInteger("-1234567a", 16));
// ---------------------------------------------------------------------
// %t
//
// Date/Time conversions applicable to Calendar, Date, and long.
// ---------------------------------------------------------------------
test("%tA", "null", (Object) null);
test("%TA", "NULL", (Object) null);
// ---------------------------------------------------------------------
// %t - errors
// ---------------------------------------------------------------------
tryCatch("%t", UnknownFormatConversionException.class);
tryCatch("%T", UnknownFormatConversionException.class);
tryCatch("%tP", UnknownFormatConversionException.class);
tryCatch("%TP", UnknownFormatConversionException.class);
tryCatch("%.5tB", IllegalFormatPrecisionException.class);
tryCatch("%#tB", FormatFlagsConversionMismatchException.class);
tryCatch("%-tB", MissingFormatWidthException.class);
// ---------------------------------------------------------------------
// %n
// ---------------------------------------------------------------------
test("%n", System.getProperty("line.separator"), (Object) null);
test("%n", System.getProperty("line.separator"), "");
tryCatch("%,n", IllegalFormatFlagsException.class);
tryCatch("%.n", UnknownFormatConversionException.class);
tryCatch("%5.n", UnknownFormatConversionException.class);
tryCatch("%5n", IllegalFormatWidthException.class);
tryCatch("%.7n", IllegalFormatPrecisionException.class);
tryCatch("%<n", IllegalFormatFlagsException.class);
// ---------------------------------------------------------------------
// %%
// ---------------------------------------------------------------------
test("%%", "%", (Object) null);
test("%%", "%", "");
tryCatch("%%%", UnknownFormatConversionException.class);
// perhaps an IllegalFormatArgumentIndexException should be defined?
tryCatch("%<%", IllegalFormatFlagsException.class);
}
