| 程序为什么会出现这样的异常 |
| [ 来源：ITWENKU 时间：2006-9-7 11:09:39 | 浏览：183人次
] |
| |
//用while语句复制字符串
public class WhileDemo
{
public static void main(String[] args)
{
String copyFromMe="Copy this string until you encounter the etter'g'.";
StringBuffer copyToMe=new StringBuffer();
int i=0;
char c=copyToMe.charAt(i);
while(c!='g')
{
copyToMe.append(c);
c=copyFromMe.charAt(++i);
}
System.out.println (copyToMe);
}
}
请各位看看这段代码，编译运行说是有异常，请教分析一下！！ 谢谢
什么异常？贴出来看
char c=copyToMe.charAt(i);
这句错了吧，应该是char c=copyFromMe.charAt(i);
public class WhileDemo
{
public static void main(String[] args)
{
String copyFromMe="Copy this string until you encounter the etter'g'.";
StringBuffer copyToMe=new StringBuffer();
int i=0;
char c=copyToMe.charAt(i);//NOT copyToMe BUT copyFromMe
while(c!='g')
{
copyToMe.append(c);
c=copyFromMe.charAt(++i);
}
System.out.println (copyToMe);
}
}
呵呵，碰到string里的g就会终止了。。
public class WhileDemo
{
public static void main(String[] args)
{
String copyFromMe="Copy this string until you encounter the etter'g'.";
StringBuffer copyToMe=new StringBuffer();
int i=0;
char c=copyFromMe.charAt(i);//是读取copyFromMe的一个字符
while(c!='g')
{
copyToMe.append(c);
c=copyFromMe.charAt(++i);
}
System.out.println (copyToMe);
}
}
public static void main(String[] args) {
String copyFromMe="Copy this string until you encounter the etter'g'.";
StringBuffer copyToMe=new StringBuffer();
int i=0;
char c=copyFromMe.charAt(i); //是读取copyFromMe
while(c!='g')
{
copyToMe.append(c);
c=copyFromMe.charAt(++i);
}
System.out.println (copyToMe);
}
犯这种错误!
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