How to Solve PKIX Validator Failure

This is the exception you may get if the SSL certificate is not a good one:

sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:385)
  at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)
  at sun.security.validator.Validator.validate(Validator.java:260)
  at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:326)
  at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:231)
  at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:126)
  at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1323)
  ... 42 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:196)
  at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:268)
  at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:380)
  ... 48 more

Just use TrustedWire and the problem is solved:

String html = new JdkRequest("https://www.google.com")
  .method(Request.GET)
  .through(TrustedWire.class)
  .fetch();