From Forum Nokia Wiki

This known issue was originally created by Welco and has been verified by Forum Nokia.

ID	KIJ001384	Creation date	May 19, 2009
Platform	Series 40 3rd Edition, FP1, Nokia 6212 NFC, Series 40 6th Edition	Devices	Series 40 3rd Edition, FP1, Nokia 6212 NFC, Series 40 6th Edition SDK emulators
Category	Java ME	Subcategory	SDK

Keywords (APIs, classes, methods, functions): System.out, System.err

Overview

System.out.println(String) and System.err.println(String) with String containing the '%' character produce incorrect output and may crash the emulator in Series 40 SDKs.

Description

Calling System.out.println(String) and System.err.println(String) with Strings including the '%' character may crash the Series 40 SDK emulator.

In addition to the print methods, text Strings with %20 are not correctly written to the standard output.

The following test String is an example URL with escaped spaces:

"/Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif"

For the affected Series 40 SDKs, the output from System.out.println and System.err.println is:

/Global/Charts/Metal/Copper/Fundamental                   OPPER             6292852g1.gif

For comparison, in S60 the result with the test SDKs (S60 5th Edition, v1.0 or the Nokia N97 SDK) is:

/Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif

How to reproduce

1. Implement the following code snippet:

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;


public class SimpleFormTest extends MIDlet {
   
   Display d;
   Form f;
   
   public void startApp() {
       
       d=Display.getDisplay(this);
       f=new Form("New form");
      
       System.err.println("Here%someline"); // This crashes the affected SDKs

   // System.out.println("/Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif"); 

//The System.out above reproduces incorrect output result

       d.setCurrent(f);
       
   }

   public void pauseApp() {
   }

   public void destroyApp(boolean unconditional) {
   }
}

2. Run the test MIDlet in the Series 40 SDK emulator. The emulator crashes in the affected SDKs. Run the test MIDlet in an S60 SDK emulator for comparison.

3. To test the incorrect output with '%20', replace the line System.err.println("Here%someline"); with System.err.println("/Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif"); by removing the comment marks.

4. Run the test MIDlet in the Series 40 SDK emulator. For the affected SDKs, the output result (for example, printed out in the output pane in Netbeans IDE) will be as described in the 'Description' regarding text Strings with %20. Run the test MIDlet in S60 SDK emulators for comparison.

In addition, steps 3 and 4 can be reproduced by using the following byte array:

byte[] test = {0x2F, 0x47, 0x6C, 0x6F, 0x62, 0x61, 0x6C, 0x2F, 0x43, 0x68, 
  0x61, 0x72, 0x74, 0x73, 0x2F, 0x4D, 0x65, 0x74, 0x61, 0x6C, 0x2F, 0x43, 0x6F, 
  0x70, 0x70, 0x65, 0x72, 0x2F, 0x46, 0x75, 0x6E, 0x64, 0x61, 0x6D, 0x65, 0x6E, 
  0x74, 0x61, 0x6C, 0x25, 0x32, 0x30, 0x43, 0x4F, 0x50, 0x50, 0x45, 0x52, 0x25, 
  0x32, 0x30, 0x46, 0x69, 0x67, 0x31, 0x2E, 0x67, 0x69, 0x66};
System.out.println("no charset: "+new String(test));
try
{
	System.out.println("ISO       : "+new String(test, "ISO-8859-1"));
	System.out.println("UTF       : "+new String(test, "utf-8"));
} catch (UnsupportedEncodingException e)
{
}

Output for the affected SDKs:

no charset: /Global/Charts/Metal/Copper/Fundamental                   OPPER             6294100g1.gif
ISO       : /Global/Charts/Metal/Copper/Fundamental                   OPPER             6292852g1.gif
UTF       : /Global/Charts/Metal/Copper/Fundamental                   OPPER             6291304g1.gif

Output for S60 SDKs:

no charset: /Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif
ISO       : /Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif
UTF       : /Global/Charts/Metal/Copper/Fundamental%20COPPER%20Fig1.gif

Solution

For the affected SDKs, avoid using % and %20 in calls to System.out and System.err printing methods.