高手进来指教一下,一个简单的调试程序问题??谢谢
dszch 2005-10-06 02:47:25 //本程序的功能是将英文字符串中大写字符串字符转换为小写字符,小写字符转换为大写字符
public class ZiFuString
{
public static void main(String args[])
{
String aa="Java Application";
char ch[]=new char[80];
int m=aa.length(); //令m等于aa字符串的长度 m=16
aa.getChars(0,m,ch,0); //在aa字符串中从0开始到m长度,复制到数组ch的0位置
for(int n=0;n<m;n++)
{
if(Character.isUpperCase(ch[n])) //判断ch[n]是否为大写
System.out.print(Character.ToLowerCase(ch[n]));//大写变成小写
else
System.out.print(Character.ToUpperCase(ch[n])); //小写变成大写
}
}
}
运行结果显示:
D:\javalearn>javac ZiFuString.java
ZiFuString.java:15: cannot resolve symbol
symbol : method ToLowerCase (char)
location: class java.lang.Character
System.out.print(Character.ToLowerCase(ch[n]));//大写变成小写
^
ZiFuString.java:17: cannot resolve symbol
symbol : method ToUpperCase (char)
location: class java.lang.Character
System.out.print(Character.ToUpperCase(ch[n])); //小写变成大写
^
2 errors
我不知怎么修改,请指教???谢谢