import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class HelloWorld extends HttpServlet {
public void service(HttpServletRequest request,
HttpServletResponse response)
throws IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("");
out.println("Hello World!");
out.println(""); } }
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Java api
class HelloWorld {
static public void main( String args[] ) {
System.out.println( "Hello World!" );
}
}
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