// Get the IR commands
			byte [] cmds = new byte[4];
			ir.getRemoteCommands(cmds, 0, cmds.length);
			
			// Figure out which channel is active:
			int command = 0;
			for(int i=0;i<4;i++) {
				if(cmds[i] > 0) {
					channel = i;
					command = cmds[i];
				}
			}

public static void IRSensorTest()
    {
        RegulatedMotor m = new EV3LargeRegulatedMotor(MotorPort.A);

        Port port = LocalEV3.get().getPort("S4");
        EV3IRSensor ir = new EV3IRSensor(port);
        while(true)
        {
            System.out.println("cmd " + ir.getRemoteCommand(0)); // gets command from channel 1
            if (ir.getRemoteCommand(0) == 1) m.forward();
            else if (ir.getRemoteCommand(0) == 2) m.backward();
            Delay.msDelay(50);
        }
    }

    /**
     * Return the current remote command from the specified channel. Remote commands
     * are a single numeric value  which represents which button on the Lego IR
     * remote is currently pressed (0 means no buttons pressed). Four channels are
     * supported (0-3) which correspond to 1-4 on the remote. The button values are:<br>
     * 1 TOP-LEFT<br>
     * 2 BOTTOM-LEFT<br>
     * 3 TOP-RIGHT<br>
     * 4 BOTTOM-RIGHT<br>
     * 5 TOP-LEFT + TOP-RIGHT<br>
     * 6 TOP-LEFT + BOTTOM-RIGHT<br>
     * 7 BOTTOM-LEFT + TOP-RIGHT<br>
     * 8 BOTTOM-LEFT + BOTTOM-RIGHT<br>
     * 9 CENTRE/BEACON<br>
     * 10 BOTTOM-LEFT + TOP-LEFT<br>
     * 11 TOP-RIGHT + BOTTOM-RIGHT<br>
     * @param chan channel to obtain the command for
     * @return the current command
     */
    public int getRemoteCommand(int chan)
    {
        switchMode(IR_REMOTE, SWITCH_DELAY);
        port.getBytes(remoteVals, 0, remoteVals.length);
        return remoteVals[chan] & 0xff;
    }

    /**
     * Obtain the commands associated with one or more channels. Each element of 
     * the array contains the command for the associated channel (0-3).
     * @param cmds the array to store the commands
     * @param offset the offset to start storing
     * @param len the number of commands to store.
     */
    public void getRemoteCommands(byte[] cmds, int offset, int len)
    {
        switchMode(IR_REMOTE, SWITCH_DELAY);
        port.getBytes(cmds, offset, len);
    }

package example;

import ev3dev.sensors.ev3.EV3IRSensor;
import lejos.hardware.port.SensorPort;
import lejos.utility.Delay;

public class IRTest {

    public static void main(String[] args) {

        EV3IRSensor ir = new EV3IRSensor(SensorPort.S1);
        
        for(int i=0;i<40;i++) {
            System.out.println("cmd " + ir.getRemoteCommand(0)); // gets command from channel 1
            Delay.msDelay(500);
        }

    }

}

package example;

import ev3dev.sensors.ev3.EV3IRSensor;
import lejos.hardware.port.SensorPort;
import lejos.utility.Delay;

public class IRTest2 {

    public static void main(String[] args) {

        EV3IRSensor ir = new EV3IRSensor(SensorPort.S1);

        byte[] commands = new byte[EV3IRSensor.IR_CHANNELS];

        for(int i=0;i<40;i++) {
            ir.getRemoteCommands(commands, 0, commands.length);
            System.out.println("cmd1 " + commands[0]); // gets command from channel 1
            System.out.println("cmd2 " + commands[1]); // gets command from channel 2
            System.out.println("cmd3 " + commands[2]); // gets command from channel 3
            System.out.println("cmd4 " + commands[3]); // gets command from channel 4

            Delay.msDelay(500);
        }

    }

}

    public EV3IRSensor(UARTPort port)
    {
        super(port, IR_PROX);
        init();
    }

EV3IRSensor ir = new EV3IRSensor(SensorPort.S1);