Added java_version to use in GH action Gradle build as -D param

.github/workflows/matrix.js

@@ -41,7 +41,6 @@ matrix.addAxis({
     '8',
     '11',
     '17',
-    '20',
     '21 ',
   ]
 });
@@ -67,16 +66,6 @@ matrix.addAxis({
   ]
 });
 
-// Test cases when Object#hashCode produces the same results
-// It allows capturing cases when the code uses hashCode as a unique identifier
-matrix.addAxis({
-  name: 'hash',
-  values: [
-    {value: 'regular', title: '', weight: 42},
-    {value: 'same', title: 'same hashcode', weight: 1}
-  ]
-});
-
 matrix.addAxis({
   name: 'locale',
   title: x => x.language + '_' + x.country,
@@ -89,59 +78,51 @@ matrix.addAxis({
 });
 
 matrix.setNamePattern([
-    'java_version', 'java_distribution', 'hash', 'os',
+    'java_version', 'java_distribution', 'os',
     'tz', 'locale',
 ]);
 
-// Microsoft Java has no distribution for 8, 18, 19
+// Microsoft Java has no distribution for 8, 18, 19, 20
 matrix.exclude({java_distribution: 'microsoft', java_version: '8'});
 matrix.exclude({java_distribution: 'microsoft', java_version: '18'});
 matrix.exclude({java_distribution: 'microsoft', java_version: '19'});
 matrix.exclude({java_distribution: 'microsoft', java_version: '20'});
 // Oracle supports 17+ only
 matrix.exclude({java_distribution: 'oracle', java_version: ['8', '11', '19']});
-// TODO: remove when compileJava with "same hashcode" issues are resolved
-// See https://bugs.openjdk.org/browse/JDK-8288590 is resolved
-// See https://github.com/jqwik-team/jqwik/pull/460#issuecomment-1428261036
-matrix.exclude({hash: {value: 'same'}});
-
-// The most rare features should be generated the first
-// For instance, we have a lot of PostgreSQL versions, so we generate the minimal the first
-// It would have to generate other parameters, and it might happen it would cover "most recent Java" automatically
-// Ensure at least one job with "same" hashcode exists
-// TODO: un-comment once "same hashcode" issues are resolved
-// matrix.generateRow({hash: {value: 'same'}});
+
 // Ensure there will be at least one job with minimal supported Java
 matrix.generateRow({java_version: matrix.axisByName.java_version.values[0]});
+
 // Ensure there will be at least one job with the latest Java
 matrix.generateRow({java_version: matrix.axisByName.java_version.values.slice(-1)[0]});
+
 // Ensure at least one Windows and at least one Linux job is present (macOS is almost the same as Linux)
-// matrix.generateRow({os: 'windows-latest'});
+matrix.generateRow({os: 'windows-latest'});
 matrix.generateRow({os: 'ubuntu-latest'});
 
 const include = matrix.generateRows(process.env.MATRIX_JOBS || 5);
 if (include.length === 0) {
   throw new Error('Matrix list is empty');
 }
+
 include.sort((a, b) => a.name.localeCompare(b.name, undefined, {numeric: true}));
 include.forEach(v => {
     // Pass locale via Gradle arguments in case it won't be inherited from _JAVA_OPTIONS
     // In fact, _JAVA_OPTIONS is non-standard and might be ignored by some JVMs
     let gradleArgs = [
         `-Duser.country=${v.locale.country}`,
         `-Duser.language=${v.locale.language}`,
+        `-DjavaVersion=${v.java_version}`,
     ];
     v.extraGradleArgs = gradleArgs.join(' ');
 });
 include.forEach(v => {
   let jvmArgs = [];
 
-  if (v.hash.value === 'same') {
-    jvmArgs.push('-XX:+UnlockExperimentalVMOptions', '-XX:hashCode=2');
-  }
   // Pass locale via _JAVA_OPTIONS so all the forked processes inherit it
   jvmArgs.push(`-Duser.country=${v.locale.country}`);
   jvmArgs.push(`-Duser.language=${v.locale.language}`);
+  //jvmArgs.push(`-DjavaVersion=${v.java_version}`); // Is that necessary?
   if (v.jit === 'hotspot' && Math.random() > 0.5) {
     // The following options randomize instruction selection in JIT compiler
     // so it might reveal missing synchronization in TestNG code