"RDLParser.java": java.io.StringBufferInputStream in java.io deprecated

Question

Hi I tried to compile a piece of Java code and received the below warning :
"RDLParser.java": java.io.StringBufferInputStream in java.io has been deprecated at line 48, column 23
The piece of code until the point of the warning is:
package Parser;
import java.io.*;
public class RDLParser implements RDLParserConstants {
static java.util.Stack paramStack = new java.util.Stack();
static java.util.Stack opStack = new java.util.Stack();
public static void main(String args[]) {
RDLParser parser;
ParseNode result;
if (args.length == 1) {
try {
parser = new RDLParser(new java.io.FileInputStream(args[0]));
} catch (java.io.FileNotFoundException e) {
System.out.println("RDL Parser Version 0.1: File " + args[0] + " not found.");
return;
} else {
System.out.println("RDL Parser Version 0.1: Usage is :");
System.out.println(" java RDLParser inputfile");
return;
try {
result = parser.tree_exp();
System.out.println(result.toString());
System.out.println("RDL Parser Version 0.1: parsed successfully.");
} catch (ParseException e) {
System.out.println("RDL Parser Version 0.1: Encountered errors during parse: " + e.toString());
public static ParseNode parse (InputStream inStream)
ParseNode result = null;
RDLParser parser = new RDLParser( inStream );
try {
result = parser.tree_exp();
//System.out.println("RDL Parser Version 0.1: parsed successfully.");
} catch (ParseException e) {
System.out.println("RDL Parser Version 0.1: Encountered errors during parse: " + e.toString());
return result;
public static ParseNode parse (String inString)
return parse (new StringBufferInputStream(inString)); //WARNING
Any ideas?

Answer 1

Whenever I get a deprecation message, the first thing I do is look in the API docs for the class and method that is deprecated. If you look at the API docs, it will tell you why the class or method is deprecated and suggest other ways to accompish the same.