Program: 180535
Project: 180535
Buggy source:
/** 
 * Returns a JSON representation of the workspace, conforming to EclipseWeb workspace API protocol.
 * @param workspace The workspace to store
 * @param baseLocation The base location for the workspace servlet
 */
public static JSONObject toJSON(WebWorkspace workspace,URI baseLocation){
  JSONObject result=WebElementResourceHandler.toJSON(workspace);
  JSONArray projects=workspace.getProjectsJSON();
  URI workspaceLocation=URIUtil.append(baseLocation,workspace.getId());
  URI projectBaseLocation=URIUtil.append(workspaceLocation,"String_Node_Str");
  if (projects == null)   projects=new JSONArray();
  for (int i=0; i < projects.length(); i++) {
    try {
      JSONObject project=(JSONObject)projects.get(i);
      project.put(ProtocolConstants.KEY_LOCATION,URIUtil.append(projectBaseLocation,project.getString(ProtocolConstants.KEY_ID)));
    }
 catch (    JSONException e) {
    }
  }
  try {
    result.put(ProtocolConstants.KEY_LOCATION,workspaceLocation.toString());
    result.put(ProtocolConstants.KEY_CHILDREN_LOCATION,workspaceLocation.toString());
    result.put(ProtocolConstants.KEY_PROJECTS,projects);
    result.put(ProtocolConstants.KEY_DIRECTORY,"String_Node_Str");
  }
 catch (  JSONException e) {
  }
  JSONArray children=new JSONArray();
  for (int i=0; i < projects.length(); i++) {
    try {
      WebProject project=WebProject.fromId(projects.getJSONObject(i).getString(ProtocolConstants.KEY_ID));
      JSONObject child=new JSONObject();
      child.put(ProtocolConstants.KEY_NAME,project.getName());
      child.put(ProtocolConstants.KEY_DIRECTORY,true);
      String contentLocation=computeProjectContentLocation(baseLocation,project);
      child.put(ProtocolConstants.KEY_LOCATION,contentLocation);
      child.put(ProtocolConstants.KEY_CHILDREN_LOCATION,contentLocation + "String_Node_Str");
      child.put(ProtocolConstants.KEY_ID,project.getId());
      children.put(child);
    }
 catch (    JSONException e) {
    }
  }
  try {
    result.put(ProtocolConstants.KEY_CHILDREN,children);
  }
 catch (  JSONException e) {
  }
  return result;
}

Fixed version (ground truth):
/** 
 * Returns a JSON representation of the workspace, conforming to EclipseWeb workspace API protocol.
 * @param workspace The workspace to store
 * @param baseLocation The base location for the workspace servlet
 */
public static JSONObject toJSON(WebWorkspace workspace,URI baseLocation){
  JSONObject result=WebElementResourceHandler.toJSON(workspace);
  JSONArray projects=workspace.getProjectsJSON();
  URI workspaceLocation=URIUtil.append(baseLocation,workspace.getId());
  URI projectBaseLocation=URIUtil.append(workspaceLocation,"String_Node_Str");
  if (projects == null)   projects=new JSONArray();
  for (int i=0; i < projects.length(); i++) {
    try {
      JSONObject project=(JSONObject)projects.get(i);
      project.put(ProtocolConstants.KEY_LOCATION,URIUtil.append(projectBaseLocation,project.getString(ProtocolConstants.KEY_ID)));
    }
 catch (    JSONException e) {
    }
  }
  try {
    result.put(ProtocolConstants.KEY_LOCATION,workspaceLocation);
    result.put(ProtocolConstants.KEY_CHILDREN_LOCATION,workspaceLocation);
    result.put(ProtocolConstants.KEY_PROJECTS,projects);
    result.put(ProtocolConstants.KEY_DIRECTORY,"String_Node_Str");
  }
 catch (  JSONException e) {
  }
  JSONArray children=new JSONArray();
  for (int i=0; i < projects.length(); i++) {
    try {
      WebProject project=WebProject.fromId(projects.getJSONObject(i).getString(ProtocolConstants.KEY_ID));
      JSONObject child=new JSONObject();
      child.put(ProtocolConstants.KEY_NAME,project.getName());
      child.put(ProtocolConstants.KEY_DIRECTORY,true);
      URI contentLocation=computeProjectContentLocation(baseLocation,project);
      child.put(ProtocolConstants.KEY_LOCATION,contentLocation);
      try {
        child.put(ProtocolConstants.KEY_CHILDREN_LOCATION,new URI(contentLocation.getScheme(),contentLocation.getUserInfo(),contentLocation.getHost(),contentLocation.getPort(),contentLocation.getPath(),"String_Node_Str",contentLocation.getFragment()));
      }
 catch (      URISyntaxException e) {
        throw new RuntimeException(e);
      }
      child.put(ProtocolConstants.KEY_ID,project.getId());
      children.put(child);
    }
 catch (    JSONException e) {
    }
  }
  try {
    result.put(ProtocolConstants.KEY_CHILDREN,children);
  }
 catch (  JSONException e) {
  }
  return result;
}