bazel: backport java rework from main

ortools/algorithms/java/KnapsackSolverTest.java

@@ -13,16 +13,20 @@
 
 package com.google.ortools.algorithms;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
 
 import com.google.ortools.Loader;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
 
 /** Test the Knapsack solver java interface. */
+@RunWith(JUnit4.class)
 public final class KnapsackSolverTest {
-  @BeforeEach
+  @SuppressWarnings("EmptyMethods")
+  @Before
   public void setUp() {
     Loader.loadNativeLibraries();
   }

ortools/algorithms/samples/BUILD.bazel

@@ -12,8 +12,9 @@
 # limitations under the License.
 
 load("@rules_cc//cc:cc_test.bzl", "cc_test")
-load("@rules_java//java:java_test.bzl", "java_test")
+load("@rules_java//java:java_binary.bzl", "java_binary")
 load("@rules_python//python:py_test.bzl", "py_test")
+load("//bazel:run_binary_test.bzl", "run_binary_test")
 
 package(default_visibility = ["//visibility:public"])
 
@@ -54,13 +55,17 @@ py_test(
     deps = ["//ortools/algorithms/python:knapsack_solver"],
 )
 
-java_test(
+java_binary(
     name = "Knapsack",
     srcs = ["Knapsack.java"],
     main_class = "com.google.ortools.algorithms.samples.Knapsack",
-    test_class = "com.google.ortools.algorithms.samples.Knapsack",
     deps = [
         "//ortools/algorithms/java:knapsacksolver",
         "//ortools/java/com/google/ortools:Loader",
     ],
 )
+
+run_binary_test(
+    name = "KnapsackTest",
+    binary = ":Knapsack",
+)