open a new page to enter credential

core/src/main/resources/hudson/tools/Messages.properties

@@ -25,7 +25,7 @@ CommandInstaller.DescriptorImpl.displayName=Run Command
 CommandInstaller.no_command=Must provide a command to run.
 CommandInstaller.no_toolHome=Must provide a tool home directory.
 JDKInstaller.FailedToInstallJDK=Failed to install JDK. Exit code={0}
-JDKInstaller.RequireOracleAccount=Installing JDK requires Oracle account. <a href="{0}">Please enter your username/password</a>
+JDKInstaller.RequireOracleAccount=Installing JDK requires Oracle account. <a href="{0}" target="_new">Please enter your username/password</a>
 JDKInstaller.UnableToInstallUntilLicenseAccepted=Unable to auto-install JDK until the license is accepted.
 ZipExtractionInstaller.DescriptorImpl.displayName=Extract *.zip/*.tar.gz
 ZipExtractionInstaller.bad_connection=Server rejected connection.