toUpperCase() 方法将字符串小写字符转换为大写。
- 语法
public String toUpperCase()
or
public String toUpperCase(Locale locale)
- Case
import java.util.*;
public class Test {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a size:(SMALL,MEDIUM,LARGE,EXTRA_LARGE)");
String input = in.next().toUpperCase();
Size size = Enum.valueOf(Size.class, input);
System.out.println("size=" + size);
System.out.println("abbreviation=" + size.getAbbreviation());
if (size == Size.EXTRA_LARGE)
System.out.println("Good job--you paid attention to the _.");
}
}
enum Size {
SMALL("S"), MEDIUM("M"), LARGE("L"), EXTRA_LARGE("XL");
private Size(String abbreviation) {
this.abbreviation = abbreviation;
}
public String getAbbreviation() {
return abbreviation;
}
private String abbreviation;
}
- Result