diff --git a/cdm/zarr/src/main/java/ucar/nc2/iosp/zarr/ZarrLayoutBB.java b/cdm/zarr/src/main/java/ucar/nc2/iosp/zarr/ZarrLayoutBB.java
index ea1a4df88f..8b85d5ffab 100644
--- a/cdm/zarr/src/main/java/ucar/nc2/iosp/zarr/ZarrLayoutBB.java
+++ b/cdm/zarr/src/main/java/ucar/nc2/iosp/zarr/ZarrLayoutBB.java
@@ -14,7 +14,6 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
-import java.util.Set;
 
 /**
  * A tiled layout for Zarr formats that accommodates uncompressing and filtering data before returning
diff --git a/cdm/zarr/src/main/java/ucar/unidata/io/zarr/VirtualRandomAccessFile.java b/cdm/zarr/src/main/java/ucar/unidata/io/zarr/VirtualRandomAccessFile.java
index 4865fbab28..441ccdf074 100644
--- a/cdm/zarr/src/main/java/ucar/unidata/io/zarr/VirtualRandomAccessFile.java
+++ b/cdm/zarr/src/main/java/ucar/unidata/io/zarr/VirtualRandomAccessFile.java
@@ -9,9 +9,6 @@
 import ucar.unidata.io.RandomAccessFile;
 
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.OptionalLong;
 
 /**
  * A wrapper for a RandomAccessFile that allows lazy loading
diff --git a/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrDataTypes.java b/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrDataTypes.java
index 2d9a4b531a..93b1899151 100644
--- a/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrDataTypes.java
+++ b/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrDataTypes.java
@@ -10,7 +10,6 @@
 import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import ucar.ma2.Array;
 import ucar.ma2.DataType;
 import ucar.ma2.InvalidRangeException;
 import ucar.nc2.NetcdfFile;
diff --git a/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrIosp.java b/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrIosp.java
index ac53eced29..ba57629eb7 100644
--- a/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrIosp.java
+++ b/cdm/zarr/src/test/java/ucar/nc2/iosp/zarr/TestZarrIosp.java
@@ -18,7 +18,6 @@
 import ucar.nc2.NetcdfFile;
 import ucar.nc2.NetcdfFiles;
 import ucar.nc2.Variable;
-import ucar.nc2.filter.Filters;
 
 import java.io.IOException;
 import java.nio.ByteOrder;