eclipse - 私のEclipse JavaはRに接続できません

Question

試してみると、次のエラーが表示されます。

org.rosuda.REngine.Rserve.RserveException: Cannot connect: Connection refused: connect
    at org.rosuda.REngine.Rserve.RConnection.<init>(RConnection.java:88)
    at org.rosuda.REngine.Rserve.RConnection.<init>(RConnection.java:60)
    at org.rosuda.REngine.Rserve.RConnection.<init>(RConnection.java:44)
    at com.google.java.JCR.main(JCR.java:7)