public class StringToUpperCaseEmp {
public static void main(String[] args) {
String str = "string runoob";
String strUpper = str.toUpperCase();
System.out.println("原始字符串: " + str);
System.out.println("转换为大写: " + strUpper);
}
}
public class StringToUpperCaseEmp {
public static void main(String[] args) {
String str = "STRING RUNOOB";
String strLower = str.toLowerCase();
System.out.println("原始字符串: " + str);
System.out.println("转换为小写: " + strLower);
}
}