e322. formatting and parsing a date using default formats.txt

这里面包含了一百多个JAVA源文件

Every locale has four default formats for formatting and parsing dates. They are called SHORT, MEDIUM, LONG, and FULL. The SHORT format consists entirely of numbers while the FULL format contains most of the date components. There is also a default format called DEFAULT and is the same as MEDIUM. 
Note: This example formats dates using the default locale (which, in the author's case, is Locale.ENGLISH). If the example is run in a different locale, the text (e.g., month names) will not be the same. 

    // Format
    Date date = new Date();
    
    String s = DateFormat.getDateInstance(DateFormat.SHORT).format(date);
    // 2/16/02
    
    s = DateFormat.getDateInstance(DateFormat.MEDIUM).format(date);
    // Feb 16, 2002
    
    s = DateFormat.getDateInstance(DateFormat.LONG).format(date);
    // February 16, 2002
    
    s = DateFormat.getDateInstance(DateFormat.FULL).format(date);
    // Saturday, February 16, 2002
    
    // This is same as MEDIUM
    s = DateFormat.getDateInstance().format(date);
    // Feb 16, 2002
    
    // This is same as MEDIUM
    s = DateFormat.getDateInstance(DateFormat.DEFAULT).format(date);
    // Feb 16, 2002
    
    // Parse
    try {
        date = DateFormat.getDateInstance(DateFormat.DEFAULT).parse("Feb 16, 2002");
    } catch (ParseException e) {
    }