You can compile and run java tools without installation of IDE. You need JDK and BO SDK libraries. On BO server (with default settings), JDK can be found in

C:\Program Files (x86)\Business Objects\javasdk\bin

Batch to setup class path (env.bat)

@echo off
set libs=C:\Program Files (x86)\Business Objects\common\4.0\java\lib
set cp=%libs%/boconfig.jar
set cp=%cp%;%libs%/cecore.jar
set cp=%cp%;%libs%/celib.jar
set cp=%cp%;%libs%/cesdk.jar
set cp=%cp%;%libs%/cesession.jar
set cp=%cp%;%libs%/corbaidl.jar
set cp=%cp%;%libs%/ebus405.jar
set cp=%cp%;%libs%/javacsv.jar
set cp=%cp%;%libs%/jtools.jar
set cp=%cp%;%libs%/logging.jar
set cp=%cp%;%libs%/rebean.common.jar
set cp=%cp%;%libs%/rebean.jar
set cp=%cp%;%libs%/rebean.wi.jar
set cp=%cp%;%libs%/SL_plugins.jar
set cp=%cp%;%libs%/wilog.jar
set cp=%cp%;%libs%/external/xpp3.jar
set cp=%cp%;%libs%/external/xpp3_min.jar;
@echo on
set cp="%cp%"

Test program (Program.java)

import com.crystaldecisions.sdk.exception.SDKException;
import com.crystaldecisions.sdk.framework.*;
import com.crystaldecisions.sdk.occa.infostore.*;

public class Program {
    public static void main(String[] args) {
        IEnterpriseSession enterpriseSession = null;
        try {
            System.out.println("Connecting...");
            ISessionMgr sessionMgr = CrystalEnterprise.getSessionMgr();
            enterpriseSession = sessionMgr.logon("Administrator", "",
                "localhost", "secEnterprise");
            // something useful
        } catch (SDKException ex) {
            ex.printStackTrace();
        } finally {
            if (enterpriseSession != null)
                enterpriseSession.logoff();    
        }
        System.out.println("Finished!");
    }
}

Compile and run

env.bat

javac -cp %cp% Program.java

java Program