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Oracle Certified Professional: Java SE Developer 1Z0-831 (Java SE 25) · Domain 10: Implementing localization

Message formatting with MessageFormat

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Last reviewed September 25, 2026 · Leer en español

Translated messages often need values inserted into them, and the position of those values differs between languages. Concatenating strings in code, such as "Hello " + name + ", you have " + n + " messages", fixes the word order in the program and cannot be translated properly. java.text.MessageFormat solves this with patterns that contain numbered placeholders, so each translation can place the values wherever its grammar needs.

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