title: gradlew.bat (and gradlew) SSLHandShakeException
body: <p>I'm new to Gradle and was going through this Spring Tutorial found here:</p>
  
  <p><a href="http://spring.io/guides/gs/gradle/">http://spring.io/guides/gs/gradle/</a></p>
  
  <p>I get to the part where it tells me to add this task:</p>
  
  <pre><code>task wrapper(type: Wrapper) {
       gradleVersion = '2.3'
  }
  </code></pre>
  
  <p>I run gradle wrapper which creates the gradlew and gradlew.bat files.</p>
  
  <p>Trying to run both of this I get this exception:</p>
  
  <pre><code>Downloading https://services.gradle.org/distributions/gradle-2.3-bin.zip
  
  Exception in thread "main" javax.net.ssl.SSLHandshakeException: sun.security.val
  idator.ValidatorException: PKIX path building failed: sun.security.provider.cert
  path.SunCertPathBuilderException: unable to find valid certification path to req
  uested target
          at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
          at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1884)
          at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:276)
          at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:270)
          at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.
  java:1341)
          at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.jav
  a:153)
          at sun.security.ssl.Handshaker.processLoop(Handshaker.java:868)
          at sun.security.ssl.Handshaker.process_record(Handshaker.java:804)
          at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1016)
          at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.
  java:1312)
          at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339
  )
          at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323
  )
          at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:
  563)
          at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect
  (AbstractDelegateHttpsURLConnection.java:185)
          at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
  nection.java:1300)
          at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Http
  sURLConnectionImpl.java:254)
          at org.gradle.wrapper.Download.downloadInternal(Download.java:56)
          at org.gradle.wrapper.Download.download(Download.java:42)
          at org.gradle.wrapper.Install$1.call(Install.java:57)
          at org.gradle.wrapper.Install$1.call(Install.java:44)
          at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAcc
  essManager.java:65)
          at org.gradle.wrapper.Install.createDist(Install.java:44)
          at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:126)
          at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:56)
  Caused by: sun.security.validator.ValidatorException: PKIX path building failed:
   sun.security.provider.certpath.SunCertPathBuilderException: unable to find vali
  d certification path to requested target
          at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:385)
          at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.jav
  a:292)
          at sun.security.validator.Validator.validate(Validator.java:260)
          at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.j
  ava:326)
          at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerIm
  pl.java:231)
          at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustMan
  agerImpl.java:126)
          at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.
  java:1323)
          ... 19 more
  Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to
   find valid certification path to requested target
          at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCert
  PathBuilder.java:196)
          at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:268)
          at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:380)
          ... 25 more
  </code></pre>
  
  <p>I try to hit the webserver at <a href="https://services.gradle.org/distributions/gradle-2.3-bin.zip">https://services.gradle.org/distributions/gradle-2.3-bin.zip</a> and I'm not getting any sort of error. I'm I missing some sort of config? Any help would be appreciated. Thanks!</p>