Example of how to add a CORS header using Jersey.

corsHeader.java

package com.myapp.filters;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CorsHeader implements Filter {
  
  @Override
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
    if (response instanceof HttpServletResponse) {
      HttpServletResponse httpServletResponse = (HttpServletResponse) response;
      httpServletResponse.addHeader("Access-Control-Allow-Origin", "*");
    }
    chain.doFilter(request, response);
  }
  
  @Override
  public void init(FilterConfig filterConfig) throws ServletException {}

  @Override
  public void destroy() {}
}

i try this but this not working, in my application debuger is not reach to line no 16; i ma using servlet version 3.0.1 jersey version 2.19 please help me on this