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25 
26 package java.text.spi;
27 
28 import java.text.NumberFormat;
29 import java.util.Locale;
30 import java.util.spi.LocaleServiceProvider;
31 
32 /**
33  * An abstract class for service providers that
34  * provide concrete implementations of the
35  * {@link java.text.NumberFormat NumberFormat} class.
36  *
37  * @since        1.6
38  */
39 public abstract class NumberFormatProvider extends LocaleServiceProvider {
40 
41     /**
42      * Sole constructor.  (For invocation by subclass constructors, typically
43      * implicit.)
44      */
NumberFormatProvider()45     protected NumberFormatProvider() {
46     }
47 
48     /**
49      * Returns a new <code>NumberFormat</code> instance which formats
50      * monetary values for the specified locale.
51      *
52      * @param locale the desired locale.
53      * @exception NullPointerException if <code>locale</code> is null
54      * @exception IllegalArgumentException if <code>locale</code> isn't
55      *     one of the locales returned from
56      *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
57      *     getAvailableLocales()}.
58      * @return a currency formatter
59      * @see java.text.NumberFormat#getCurrencyInstance(java.util.Locale)
60      */
getCurrencyInstance(Locale locale)61     public abstract NumberFormat getCurrencyInstance(Locale locale);
62 
63     /**
64      * Returns a new <code>NumberFormat</code> instance which formats
65      * integer values for the specified locale.
66      * The returned number format is configured to
67      * round floating point numbers to the nearest integer using
68      * half-even rounding (see {@link java.math.RoundingMode#HALF_EVEN HALF_EVEN})
69      * for formatting, and to parse only the integer part of
70      * an input string (see {@link
71      * java.text.NumberFormat#isParseIntegerOnly isParseIntegerOnly}).
72      *
73      * @param locale the desired locale
74      * @exception NullPointerException if <code>locale</code> is null
75      * @exception IllegalArgumentException if <code>locale</code> isn't
76      *     one of the locales returned from
77      *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
78      *     getAvailableLocales()}.
79      * @return a number format for integer values
80      * @see java.text.NumberFormat#getIntegerInstance(java.util.Locale)
81      */
getIntegerInstance(Locale locale)82     public abstract NumberFormat getIntegerInstance(Locale locale);
83 
84     /**
85      * Returns a new general-purpose <code>NumberFormat</code> instance for
86      * the specified locale.
87      *
88      * @param locale the desired locale
89      * @exception NullPointerException if <code>locale</code> is null
90      * @exception IllegalArgumentException if <code>locale</code> isn't
91      *     one of the locales returned from
92      *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
93      *     getAvailableLocales()}.
94      * @return a general-purpose number formatter
95      * @see java.text.NumberFormat#getNumberInstance(java.util.Locale)
96      */
getNumberInstance(Locale locale)97     public abstract NumberFormat getNumberInstance(Locale locale);
98 
99     /**
100      * Returns a new <code>NumberFormat</code> instance which formats
101      * percentage values for the specified locale.
102      *
103      * @param locale the desired locale
104      * @exception NullPointerException if <code>locale</code> is null
105      * @exception IllegalArgumentException if <code>locale</code> isn't
106      *     one of the locales returned from
107      *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
108      *     getAvailableLocales()}.
109      * @return a percent formatter
110      * @see java.text.NumberFormat#getPercentInstance(java.util.Locale)
111      */
getPercentInstance(Locale locale)112     public abstract NumberFormat getPercentInstance(Locale locale);
113 }
114