TLS 1.2 was supported in Java 8 but not in Java 7

When I tried to connect a URL (one of vendors URL which supports TLS 1.2 and worked fine previously with Java 7) by using Java 7, I found bellow Exception:

javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
    at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:1943)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1059)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1294)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1321)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1305)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:523)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1087)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)

So that I have enabled -Dhttps.protocols=TLSv1.2, -Djavax.net.ssl.trustStore=<keystoreFilePath> and -Djavax.net.ssl.trustStorePassword=<password>

After that also I got the same issue. Then I have upgrade the Java version to 8 so it could connect to the URL without any SSL issue.

As per this blog, in Java 8, TLS 1.2 is default and TLS 1.2 can be tuned with the property -Dhttps.protocols in Java 7. In Java 7, I could be able to access a URL without a problem if I enable above properties through my past experiences.

But for the URL, I am requested to upgrade the Java version. What can be vendor side changes caused for the Exception mentioned above in Java 7? And without upgrading Java 8, can't I access the URL?