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Text lesson

toUpperCase()

Example

Transform a string into uppercase and lowercase characters.

String txt = "Hello World";
System.out.println(txt.toUpperCase());
System.out.println(txt.toLowerCase());

Definition and Usage

The toUpperCase() function changes a string into uppercase letters.

Please note that the toLowerCase() method converts a string into lowercase letters.

Syntax

public String toUpperCase()

Parameters

None.

Technical Details

Returns

A string value that represents the transformed string in uppercase.