Method Chaining in Java

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Method chaining is a programming technique that allows numerous methods to be called in a single line of code by connecting the methods with dot notation. This method is often utilized in object-oriented programming languages such as Java.

StringBuilder sb = new StringBuilder();
sb.append("Hello").append(" ").append("world");
String message = sb.toString();
  • This code employs method chaining to join three strings and generate a final message.
  • The append() method of the StringBuilder class returns the StringBuilder object itself.
  • The three texts are concatenated in a single line of code by chaining three calls to append() together using dot notation.


Method chaining can make code more concise and readable but also make debugging more difficult. It is essential to use method chaining judiciously and to break up long chains into multiple lines when necessary for clarity.