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Jan 1, 2001 · The format() method returns a formatted string using a locale, format and additional arguments. If a locale is not passed to this method then the locale given by Locale.getDefault() is used. Data from the additional arguments is formatted and written into placeholders in the format string, which are marked by a % symbol.
Aug 17, 2022 · The general syntax of a format specifier is. % [flags] [width] [.precision] [argsize] typechar. The format () method of Formatter class accepts a wide variety of format specifiers. When an uppercase specifier is used, then letters are shown in uppercase.
Oct 4, 2024 · In Java, String format() method returns a formatted string using the given locale, specified format string, and arguments. We can concatenate the strings using this method and at the same time, we can format the output concatenated string.
Oct 22, 2021 · In this tutorial, we'll be formatting Strings in Java using printf(), System.format(), String.format(), the Formatter and MessageFormat classes.
- Example
- Error Handling and Exceptions
- Locale-Based Formatting
The String.format()method also allows multiple format specifiers in one go which produces a single string that contains the formatted values:
The FormatFlagsConversionMismatchException occurs when incompatible flags are provided for a format specifier. For example, using both %+ and %s(string conversion) together is invalid: WhileIllegalFormatPrecisionException exception occurs when we attempt to use precision with a format type that doesn’t support it such as integers: TheMissingFormatA...
Locales define different conventions for separating thousands and decimals: Locales influence how dates are presented, with various ordering of day, month, and year: Local conventions also impact how currency symbols and values are displayed, with different spacing and punctuation:
The most frequent way to format a String is using this static method, that is long available since Java 5 and has two overloaded methods: String#format(String format, Object args...) String#format(Locale l, String format, Object args...)
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The format string consists of static text embedded with format specifiers; except for the format specifiers, the format string is output unchanged. Format strings support many features. In this tutorial, we'll just cover some basics.