[Demonstration 1]

[Buggy Method]
public void newConvert(String src, String dst) throws IOException {
}

[Buggy Hunk]
public void newConvert(String src, String dst) throws IOException {

[Patch]
private void newConvert(String src, String dst) throws IOException {

[Demonstration 2]

[Buggy Method]
public static void replaceStringBuffer(StringBuffer src, String oldString, String newString, boolean oneTime) {
    if (src == null || src.length() == 0 || isEmpty(oldString) || oldString.equals(newString)) {
        return;
    }
    newString = isEmpty(newString) ? "" : newString;
    int oldLen = oldString.length();
    int newLen = newString.length();
    int index = src.indexOf(oldString);
    while (index > -1) {
        src = src.replace(index, index + oldLen, newString);
        index = src.indexOf(oldString, index + newLen);
        if (oneTime) {
            break;
        }
    }
}

[Buggy Hunk]
newString = isEmpty(newString) ? "" : newString;

[Patch]
newString = newString == null ? "" : newString;

[Demonstration 3]

[Buggy Method]
@JavascriptInterface
public void launchHelp() {
    Intent i = new Intent();
    i.setAction("net.basov.ticketinfo.LAUNCH_HELP");
    mContext.startActivity(i);
}

[Buggy Hunk]
i.setAction("net.basov.ticketinfo.LAUNCH_HELP");

[Patch]
i.setAction(mContext.getPackageName()+".LAUNCH_HELP");