Java toUpperCase () method

Java String class

toUpperCase () method to a string lowercase characters converted to uppercase.

grammar

public String toUpperCase()

或

public String toUpperCase(Locale locale)

parameter

• no

return value

Uppercase characters converted to a string after.

Examples

public class Test {
    public static void main(String args[]) {
    	String Str = new String("www.w3big.com");

        System.out.print("返回值 :" );
        System.out.println( Str.toUpperCase() );
	}
}

The above program execution results:

返回值 :WWW.w3big.com

Java String class