StringBuffer new sb = StringBuffer()
Striang a = "abc'd";
for(int i=0;i<a.length;i++)
{
sb.append(a.charAt(i));
if(a.charAt(i)=='\'')
sb.append('\'');
}
return sb.toString();
Striang a = "abc'd";
for(int i=0;i<a.length;i++)
{
sb.append(a.charAt(i));
if(a.charAt(i)=='\'')
sb.append('\'');
}
return sb.toString();
\'' 双引号
\' 单引号
\\ 反斜杠