e1004.java

java小程序

public class E1004
{
static String myInsert(String ins,int index,String str)
{
StringBuffer sb=new StringBuffer();
sb.append(str);
sb.insert(index,ins);
return sb.toString();
}
public static void main(String args[])
{
System.out.println(myInsert("喜欢",1,"我Java"));
}
}