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字符小写转大写
import java.util.Scanner;
public class CharacterLowToUp {
public static void main(String[] args) {
System.out.println("请输入一个字符");
Scanner s = new Scanner(System.in);
char n = s.next().charAt(0);
System.out.println(LowToUp(n));
}
public static char LowToUp(char n){
if(Character.isLowerCase(n)){
return Character.toUpperCase(n);
}else{
return n;
}
}
}