string-to-upper-case
Java String.toUpperCase()
The method toUpperCase() converts all characters of a String to
upper case. If no Locale is passed to the method, then it will use the
default Locale.
However, it may produce unexpected results if it’s run on a system whose
default Locale is different. To avoid this, we can simply pass the
Locale to the method.
Available Signatures
public String toUpperCase()
public String toUpperCase(Locale locale)Example
@Test
public void whenConvertToUpperCase_thenCorrect() {
String s = "Welcome to Baeldung!";
assertEquals("WELCOME TO BAELDUNG!", s.toUpperCase());
}Next »
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