Failed to compile behind proxy

[anti1234]

Hi, I try to compile the dummy-vnfm use this command :

./dummy-vnfm.sh compile

well ,I was stuck in the download step for a long time :

Downloading https://services.gradle.org/distributions/gradle-3.2-bin.zip

The Error Report :

Exception in thread "main" java.net.ConnectException: Connection timed out
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:579)
	at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:635)
	at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:160)
	at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
	at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
	at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:934)
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1302)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
	at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
	at org.gradle.wrapper.Download.download(Download.java:44)
	at org.gradle.wrapper.Install$1.call(Install.java:59)
	at org.gradle.wrapper.Install$1.call(Install.java:46)
	at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
	at org.gradle.wrapper.Install.createDist(Install.java:46)
	at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:126)
	at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)

I am behind the company proxy , it's matter ? If so , how can I set a proxy server?