Try this sample code :
public class RegexTester {
public static void main(String[] args) throws Exception {
String data = "{\"aaa\",\"bbb\", \"ccc\"}";
String modifiedData = data.replaceAll("\\{|\"|\\}", "");
System.out.println("Modified data : " + modifiedData);
}
Using regex try this pattarn :
Pattern pattern = Pattern.compile("\\{\"(.+?)\"(,?)\"(.+?)\"(,?)\\s*\"(.+?)\"");
Matcher matcher = pattern.matcher(data);
System.out.println("Started");
while (matcher.find()) {
System.out.print(matcher.group(1));
System.out.print(matcher.group(2));
System.out.print(matcher.group(3));
System.out.print(matcher.group(4));
System.out.print(matcher.group(5));
}
Hope this addresses your issue.