import java.io.FileInputStream;
import java.security.KeyStore;
import java.security.cert.Certificate;
public class MainClass {
public static void main(String args[]) throws Exception {
String pass = "wshr.ut";
String alias = "mytest";
String name = "mykeystore";
FileInputStream in = new FileInputStream(name);
KeyStore ks = KeyStore.getInstance("JKS");
ks.load(in, pass.toCharArray());
Certificate c = ks.getCertificate(alias);
in.close();
System.out.println(c);
}
}