33 import java.io.FileNotFoundException;
34 import java.io.Flushable;
35 import java.io.OutputStream;
36 import java.io.OutputStreamWriter;
37 import java.io.PrintStream;
38 import java.io.UnsupportedEncodingException;
39 import java.math.BigDecimal;
40 import java.math.BigInteger;
41 import java.math.MathContext;
42 import java.math.RoundingMode;
43 import java.nio.charset.Charset;
44 import java.nio.charset.IllegalCharsetNameException;
45 import java.nio.charset.UnsupportedCharsetException;
46 import java.text.DateFormatSymbols;
47 import java.text.DecimalFormat;
48 import java.text.DecimalFormatSymbols;
49 import java.text.NumberFormat;
50 import java.util.regex.Matcher;
51 import java.util.regex.Pattern;
52
53 import java.time.Clock;
54 import java.time.DateTimeException;
55 import java.time.Instant;
56 import java.time.ZoneId;
57 import java.time.ZoneOffset;
58 import java.time.temporal.ChronoField;
59 import java.time.temporal.TemporalAccessor;
60 import java.time.temporal.Queries;
61 import java.time.temporal.OffsetDate;
62 import java.time.temporal.OffsetDateTime;
63 import java.time.temporal.OffsetTime;
64 import java.time.temporal.ChronoZonedDateTime;
65 import java.time.format.TextStyle;
66 import java.time.zone.ZoneRules;
67
68 import sun.misc.DoubleConsts;
69 import sun.misc.FormattedFloatingDecimal;
70
71 /**
72 * An interpreter for printf-style format strings. This class provides support
73 * for layout justification and alignment, common formats for numeric, string,
74 * and date/time data, and locale-specific output. Common Java types such as
75 * {@code byte}, {@link java.math.BigDecimal BigDecimal}, and {@link Calendar}
76 * are supported. Limited formatting customization for arbitrary user types is
77 * provided through the {@link Formattable} interface.
78 *
79 * <p> Formatters are not necessarily safe for multithreaded access. Thread
80 * safety is optional and is the responsibility of users of methods in this
81 * class.
82 *
83 * <p> Formatted printing for the Java language is heavily inspired by C's
84 * {@code printf}. Although the format strings are similar to C, some
85 * customizations have been made to accommodate the Java language and exploit
86 * some of its features. Also, Java formatting is more strict than C's; for
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33 import java.io.FileNotFoundException;
34 import java.io.Flushable;
35 import java.io.OutputStream;
36 import java.io.OutputStreamWriter;
37 import java.io.PrintStream;
38 import java.io.UnsupportedEncodingException;
39 import java.math.BigDecimal;
40 import java.math.BigInteger;
41 import java.math.MathContext;
42 import java.math.RoundingMode;
43 import java.nio.charset.Charset;
44 import java.nio.charset.IllegalCharsetNameException;
45 import java.nio.charset.UnsupportedCharsetException;
46 import java.text.DateFormatSymbols;
47 import java.text.DecimalFormat;
48 import java.text.DecimalFormatSymbols;
49 import java.text.NumberFormat;
50 import java.util.regex.Matcher;
51 import java.util.regex.Pattern;
52
53 import java.time.DateTimeException;
54 import java.time.Instant;
55 import java.time.ZoneId;
56 import java.time.ZoneOffset;
57 import java.time.temporal.ChronoField;
58 import java.time.temporal.TemporalAccessor;
59 import java.time.temporal.Queries;
60
61 import sun.misc.DoubleConsts;
62 import sun.misc.FormattedFloatingDecimal;
63
64 /**
65 * An interpreter for printf-style format strings. This class provides support
66 * for layout justification and alignment, common formats for numeric, string,
67 * and date/time data, and locale-specific output. Common Java types such as
68 * {@code byte}, {@link java.math.BigDecimal BigDecimal}, and {@link Calendar}
69 * are supported. Limited formatting customization for arbitrary user types is
70 * provided through the {@link Formattable} interface.
71 *
72 * <p> Formatters are not necessarily safe for multithreaded access. Thread
73 * safety is optional and is the responsibility of users of methods in this
74 * class.
75 *
76 * <p> Formatted printing for the Java language is heavily inspired by C's
77 * {@code printf}. Although the format strings are similar to C, some
78 * customizations have been made to accommodate the Java language and exploit
79 * some of its features. Also, Java formatting is more strict than C's; for
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