public static void main(String args[])
{
String str = "this is Java";
System.out.println(removeCharAt(str, 3));
}
public static String removeCharAt(String s, int pos)
{
return s.substring(0, pos) + s.substring(pos + 1);
}
原文：https://www.cnblogs.com/onetheway2018/p/11553046.html