diff --git a/runtime/src/main/java/org/capnproto/AnyPointer.java b/runtime/src/main/java/org/capnproto/AnyPointer.java
index 8f750cb..23a034f 100644
--- a/runtime/src/main/java/org/capnproto/AnyPointer.java
+++ b/runtime/src/main/java/org/capnproto/AnyPointer.java
@@ -67,7 +67,7 @@ public final class AnyPointer {
         }
 
         final Reader imbue(CapTableReader capTable) {
-            var result = new Reader(segment, pointer, nestingLimit);
+            Reader result = new Reader(segment, pointer, nestingLimit);
             result.capTable = capTable;
             return result;
         }
@@ -83,9 +83,9 @@ public final class AnyPointer {
         public final ClientHook getPipelinedCap(short[] ops) {
             AnyPointer.Reader any = this;
 
-            for (var pointerIndex: ops) {
+            for (short pointerIndex: ops) {
                 if (pointerIndex >= 0) {
-                    var reader = WireHelpers.readStructPointer(any.segment, any.capTable, any.pointer, null, 0, any.nestingLimit);
+                    StructReader reader = WireHelpers.readStructPointer(any.segment, any.capTable, any.pointer, null, 0, any.nestingLimit);
                     any = reader._getPointerField(AnyPointer.factory, pointerIndex);
                 }
             }
@@ -176,7 +176,7 @@ public final class AnyPointer {
         }
 
         public Pipeline getPointerField(short pointerIndex) {
-            var newOps = new short[this.ops.length + 1];
+            short[] newOps = new short[this.ops.length + 1];
             System.arraycopy(this.ops, 0, newOps, 0, this.ops.length);
             newOps[this.ops.length] = pointerIndex;
             return new Pipeline(this.hook, newOps);
diff --git a/runtime/src/main/java/org/capnproto/ExportTable.java b/runtime/src/main/java/org/capnproto/ExportTable.java
index dcd7730..8cb7089 100644
--- a/runtime/src/main/java/org/capnproto/ExportTable.java
+++ b/runtime/src/main/java/org/capnproto/ExportTable.java
@@ -19,7 +19,7 @@ abstract class ExportTable<T> implements Iterable<T> {
     }
 
     public T erase(int id, T entry) {
-        var value = slots.get(id);
+        T value = slots.get(id);
         if (value == entry) {
             freeIds.add(id);
             return slots.remove(id);
@@ -30,8 +30,8 @@ abstract class ExportTable<T> implements Iterable<T> {
 
     public T next() {
         int id = freeIds.isEmpty() ? max++ : freeIds.remove();
-        var value = newExportable(id);
-        var prev = slots.put(id, value);
+        T value = newExportable(id);
+        T prev = slots.put(id, value);
         assert prev == null;
         return value;
     }
diff --git a/runtime/src/main/java/org/capnproto/ImportTable.java b/runtime/src/main/java/org/capnproto/ImportTable.java
index 6905060..970dee8 100644
--- a/runtime/src/main/java/org/capnproto/ImportTable.java
+++ b/runtime/src/main/java/org/capnproto/ImportTable.java
@@ -19,7 +19,7 @@ abstract class ImportTable<T> implements Iterable<T> {
     }
 
     public T erase(int id, T entry) {
-        var removed = slots.remove(id, entry);
+        boolean removed = slots.remove(id, entry);
         assert removed;
         return entry;
     }