help me regarding StringBuffer.indexOf(String)

help me regarding StringBuffer.indexOf(String),i have tried both jdk1.4 and jdk1.6 for the following code to work..can any1 suggest me solution

Code:

psvm(String SubmitDate)
{
StringBuffer returnQuery  = new StringBuffer();
String dateString="";
returnQuery.append("SELECT * FROM ");
    returnQuery.append(view);
    returnQuery.append(userString);
    returnQuery.append(envString);
    returnQuery.append(requestidString);
    returnQuery.append(statusString);

    if((Submitdate==null) || (Submitdate.equals("")))
    {
        dateString="";
    }
    else if(returnQuery.indexOf("where")>0)
        dateString="  AND SUBMIT_DATE LIKE '"+Submitdate+"%'";
    else 
        dateString=" WHERE SUBMIT_DATE LIKE '"+Submitdate+"%'";

} 

iam getting error as the method indexOf(String) is undefined for type StringBuffer

Can any1 suggest me...

There is no function called indexOf in the class StringBuffer

I suggest you use String instead of StringBuffer .And when you append you use the operator '+' .For example :

Code:

String name="Tom";
name+="AAA";
name+="aaa";

now the content of name is "TomAAAaaa"

I tried this code...

Code:

public static void main(String[] args) {
StringBuffer mybuff=new StringBuffer("Mohamed Sami");
mybuff.append(" ddd");
System.out.print(mybuff.indexOf("ddd"));


}

and the output is 13....