Examples of java.text.MessageFormat.applyPattern()

java.text.MessageFormat.applyPattern()
Sets the pattern used by this message format. The method parses the pattern and creates a list of subformats for the format elements contained in it. Patterns and their interpretation are specified in the class description. @param pattern the pattern for this message format @exception IllegalArgumentException if the pattern is invalid

        assertTrue("Wrong full date format", format.getFormats()[0]
                .equals(DateFormat.getDateInstance(DateFormat.FULL)));
    assertEquals("Wrong full date pattern", 
        "{0,date,full}", format.toPattern());


        format.applyPattern("{0, date, MMM d {hh:mm:ss}}");
    assertEquals("Wrong time/date format", " MMM d {hh:mm:ss}", ((SimpleDateFormat) (format
        .getFormats()[0])).toPattern());
    assertEquals("Wrong time/date pattern", 
        "{0,date, MMM d {hh:mm:ss}}", format.toPattern());

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    assertEquals("Wrong time/date format", " MMM d {hh:mm:ss}", ((SimpleDateFormat) (format
        .getFormats()[0])).toPattern());
    assertEquals("Wrong time/date pattern", 
        "{0,date, MMM d {hh:mm:ss}}", format.toPattern());


        format.applyPattern("{0, number}");
        assertTrue("Wrong number format", format.getFormats()[0]
                .equals(NumberFormat.getNumberInstance()));
    assertEquals("Wrong number pattern", 
        "{0,number}", format.toPattern());
        format.applyPattern("{0, number, currency}");

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        format.applyPattern("{0, number}");
        assertTrue("Wrong number format", format.getFormats()[0]
                .equals(NumberFormat.getNumberInstance()));
    assertEquals("Wrong number pattern", 
        "{0,number}", format.toPattern());
        format.applyPattern("{0, number, currency}");
        assertTrue("Wrong currency number format", format.getFormats()[0]
                .equals(NumberFormat.getCurrencyInstance()));
    assertEquals("Wrong currency number pattern", 
        "{0,number,currency}", format.toPattern());
        format.applyPattern("{0, number, percent}");

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        format.applyPattern("{0, number, currency}");
        assertTrue("Wrong currency number format", format.getFormats()[0]
                .equals(NumberFormat.getCurrencyInstance()));
    assertEquals("Wrong currency number pattern", 
        "{0,number,currency}", format.toPattern());
        format.applyPattern("{0, number, percent}");
        assertTrue("Wrong percent number format", format.getFormats()[0]
                .equals(NumberFormat.getPercentInstance()));
    assertEquals("Wrong percent number pattern", 
        "{0,number,percent}", format.toPattern());
        format.applyPattern("{0, number, integer}");

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        format.applyPattern("{0, number, percent}");
        assertTrue("Wrong percent number format", format.getFormats()[0]
                .equals(NumberFormat.getPercentInstance()));
    assertEquals("Wrong percent number pattern", 
        "{0,number,percent}", format.toPattern());
        format.applyPattern("{0, number, integer}");
        NumberFormat nf = NumberFormat.getInstance();
        nf.setMaximumFractionDigits(0);
        nf.setParseIntegerOnly(true);
        assertTrue("Wrong integer number format", format.getFormats()[0]
                .equals(nf));

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        assertTrue("Wrong integer number format", format.getFormats()[0]
                .equals(nf));
    assertEquals("Wrong integer number pattern", 
        "{0,number,integer}", format.toPattern());


        format.applyPattern("{0, number, {'#'}##0.0E0}");


        /*
         * TODO validate these assertions 
         * String actual = ((DecimalFormat)(format.getFormats()[0])).toPattern(); 
         * assertEquals("Wrong pattern number format", "' {#}'##0.0E0", actual);

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         * assertEquals("Wrong pattern number format", "' {#}'##0.0E0", actual); 
         * assertEquals("Wrong pattern number pattern", "{0,number,' {#}'##0.0E0}", format.toPattern());
         * 
         */


        format.applyPattern("{0, choice,0#no|1#one|2#{1,number}}");
    assertEquals("Wrong choice format",
        
            "0.0#no|1.0#one|2.0#{1,number}", ((ChoiceFormat) format.getFormats()[0]).toPattern());
    assertEquals("Wrong choice pattern", 
        "{0,choice,0.0#no|1.0#one|2.0#{1,number}}", format.toPattern());

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        "{0,choice,0.0#no|1.0#one|2.0#{1,number}}", format.toPattern());
    assertEquals("Wrong formatted choice", "3.6", format.format(
        new Object[] { new Integer(2), new Float(3.6) }));


        try {
            format.applyPattern("WRONG MESSAGE FORMAT {0,number,{}");
            fail("Expected IllegalArgumentException for invalid pattern");
        } catch (IllegalArgumentException e) {
        }
        
        // Regression for HARMONY-65

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        // Regression for HARMONY-65
        MessageFormat mf = new MessageFormat("{0,number,integer}");
        String badpattern = "{0,number,#";
        try {
            mf.applyPattern(badpattern);
            fail("Assert 0: Failed to detect unmatched brackets.");
        } catch (IllegalArgumentException e) {
            // expected
        }
    }

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        // Test for method boolean
        // java.text.MessageFormat.equals(java.lang.Object)
        MessageFormat format1 = new MessageFormat("{0}");
        MessageFormat format2 = new MessageFormat("{1}");
        assertTrue("Should not be equal", !format1.equals(format2));
        format2.applyPattern("{0}");
        assertTrue("Should be equal", format1.equals(format2));
        SimpleDateFormat date = (SimpleDateFormat) DateFormat.getTimeInstance();
        format1.setFormat(0, DateFormat.getTimeInstance());
        format2.setFormat(0, new SimpleDateFormat(date.toPattern()));
        assertTrue("Should be equal2", format1.equals(format2));

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