java字符转换

java字符串大小写转换的两种方法

import java.io..*

public class convertToPrintString
{
public static void main(String[] args) throws IOException
{
InputStreamReader reader = new InputStreamReader(System.in);
BufferedReader input = new BufferedReader(reader);
System.out.print("Please enter your word:");
String text = input.readLine();
String s = convertString(text);
System.out.println(s);
}
//第一种方法
public static String convertString(String src)
{
char[] array = src.toCharArray();
int temp = 0;
for (int i = 0; i < array.length; i++)
{
temp = (int) array[i];
if (temp <= 90 && temp >= 65)
{ // array[i]为大写字母
array[i] = (char) (te