diff --git a/opendap/src/test/java/ucar/nc2/dods/TestAxisAttrCombiner.java b/opendap/src/test/java/ucar/nc2/dods/TestAxisAttrCombiner.java
index 3d210a72d8..b7f3a36d43 100644
--- a/opendap/src/test/java/ucar/nc2/dods/TestAxisAttrCombiner.java
+++ b/opendap/src/test/java/ucar/nc2/dods/TestAxisAttrCombiner.java
@@ -3,16 +3,19 @@
  */
 package ucar.nc2.dods;
 
-import junit.framework.TestCase;
 import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ucar.nc2.Attribute;
 import ucar.nc2.constants._Coordinate;
 import java.lang.invoke.MethodHandles;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 import static ucar.nc2.dods.DODSNetcdfFile.combineAxesAttrs;
 
-public class TestAxisAttrCombiner extends TestCase {
+public class TestAxisAttrCombiner {
   private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
   @Test
@@ -47,6 +50,7 @@ public void testAxisAttrCombineOverlap() {
     assertEquals(attr3.getStringValue().split("\\s").length, 6);
   }
 
+  @Test
   public void testAxisAttrCombineOverlapMangled() {
     Attribute attr1 = new Attribute(_Coordinate.Axes, " abe bec     cid dave    ");
     Attribute attr2 = new Attribute(_Coordinate.Axes, "cid   dave ed   fin");
diff --git a/opendap/src/test/java/ucar/nc2/dods/TestDODSStructureForSequence.java b/opendap/src/test/java/ucar/nc2/dods/TestDODSStructureForSequence.java
index 0ae04f100d..70c65d04ce 100644
--- a/opendap/src/test/java/ucar/nc2/dods/TestDODSStructureForSequence.java
+++ b/opendap/src/test/java/ucar/nc2/dods/TestDODSStructureForSequence.java
@@ -5,9 +5,12 @@
 // $Id: TestDODSStructureForSequence.java 51 2006-07-12 17:13:13Z caron $
 package ucar.nc2.dods;
 
-import junit.framework.TestCase;
+import static org.junit.Assert.assertTrue;
+
 import java.io.IOException;
 import java.lang.invoke.MethodHandles;
+import org.junit.Ignore;
+import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ucar.nc2.Structure;
@@ -17,18 +20,11 @@
 /**
  * Test DODS Sequence access using DODSStructure.
  */
-public class TestDODSStructureForSequence extends TestCase {
+public class TestDODSStructureForSequence {
   private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-  public TestDODSStructureForSequence(String name) {
-    super(name);
-  }
-
-  // suppress "no test failure warning message */
-  public void testFake() throws Exception {
-    assert true;
-  }
-
+  @Ignore("Server dods.jpl.nasa.gov not found")
+  @Test
   public void utestConstrainedAccess() {
     // URL for the JPL QuikSCAT DODS File Server (DFS).
     String dfsURL = "http://dods.jpl.nasa.gov/dods-bin/nph-dods/catalogs/quikscat/L2B/quikscat_L2.dat";
diff --git a/opendap/src/test/java/ucar/nc2/dods/TestSequence.java b/opendap/src/test/java/ucar/nc2/dods/TestSequence.java
index d1c597d882..223ad86905 100644
--- a/opendap/src/test/java/ucar/nc2/dods/TestSequence.java
+++ b/opendap/src/test/java/ucar/nc2/dods/TestSequence.java
@@ -1,6 +1,6 @@
 package ucar.nc2.dods;
 
-import junit.framework.TestCase;
+import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ucar.ma2.Array;
@@ -10,21 +10,10 @@
 import java.lang.invoke.MethodHandles;
 import ucar.nc2.dataset.NetcdfDatasets;
 
-public class TestSequence extends TestCase {
+public class TestSequence {
   private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-  final String TITLE = "OpenDAP Sequence Test";
-
-  public TestSequence(String name, String testdir) {
-    super(name);
-  }
-
-  public TestSequence(String name) {
-    super(name);
-  }
-
-  static String baseline = "";
-
+  @Test
   public void testSequence() {
     // The old url: "http://tsds.net/tsds/test/Scalar" is no longer valid.
     // So replaced with an equivalent.