High CPU usage and memory consumption even if doing nothing

.gitignore

@@ -5,6 +5,7 @@ bin/
 **/lib/
 !org.eclipse.jdt.ls.tests/projects/singlefile/simple/lib/
 !org.eclipse.jdt.ls.tests/projects/eclipse/testnullable2/lib/
+!org.eclipse.jdt.ls.tests/projects/eclipse/testnullable3/lib/
 !org.eclipse.jdt.ls.tests/projects/maven/salut5/node_modules/
 !org.eclipse.jdt.ls.tests/fakejdk2/17a/bin
 !org.eclipse.jdt.ls.tests/fakejdk2/17a/lib

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/preferences/Preferences.java

@@ -2455,7 +2455,7 @@ private boolean hasAnnotationNullAnalysisTypes() {
 			String nonnullType = getAnnotationType(javaProject, this.nonnullTypes, nonnullClasspathStorage);
 			String nullableType = getAnnotationType(javaProject, this.nullableTypes, nullableClasspathStorage);
 			String nonnullbydefaultTypes = getAnnotationType(javaProject, this.nonnullbydefaultTypes, nonnullbydefaultClasspathStorage);
-			if (nonnullType != null || nullableType != null || nonnullbydefaultTypes != null) {
+			if (nonnullType != null && nullableType != null && nonnullbydefaultTypes != null) {
 				return true;
 			}
 		}
@@ -2529,7 +2529,7 @@ private String findTypeInProject(IJavaProject javaProject, String annotationType
 	 */
 	private Map<String, String> generateProjectNullAnalysisOptions(String nonnullType, String nullableType, String nonnullbydefaultType) {
 		Map<String, String> options = new HashMap<>();
-		if (nonnullType == null && nullableType == null && nonnullbydefaultType == null) {
+		if (nonnullType == null || nullableType == null || nonnullbydefaultType == null) {
 			options.put(JavaCore.COMPILER_ANNOTATION_NULL_ANALYSIS, "disabled");
 			// set default values
 			Hashtable<String, String> defaultOptions = JavaCore.getDefaultOptions();

org.eclipse.jdt.ls.tests/projects/eclipse/testnullable3/.classpath

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="lib" path="lib/org-netbeans-api-annotations-common-RELEASE200.jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

org.eclipse.jdt.ls.tests/projects/eclipse/testnullable3/.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>testnullable2</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

org.eclipse.jdt.ls.tests/projects/eclipse/testnullable3/src/org/sample/Main.java

@@ -0,0 +1,10 @@
+package org.sample;
+import javax.annotation.Nonnull;
+public class Main {
+  public static void main(String[] args) {
+    Test.foo(null); 
+  }
+}
+class Test {
+  static void foo(@Nonnull Test a) { }
+}

org.eclipse.jdt.ls.tests/src/org/eclipse/jdt/ls/core/internal/preferences/NullAnalysisTest.java

@@ -13,6 +13,7 @@
 package org.eclipse.jdt.ls.core.internal.preferences;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
@@ -227,4 +228,31 @@ public void testNonnullbyDefault() throws Exception {
 		}
 	}
 
+	// https://github.com/redhat-developer/vscode-java/issues/3387
+	@Test
+	public void testMissingNonNull() throws Exception {
+		try {
+			this.preferenceManager.getPreferences().setNonnullTypes(List.of("javax.annotation.Nonnull", "org.eclipse.jdt.annotation.NonNull"));
+			this.preferenceManager.getPreferences().setNullableTypes(List.of("javax.annotation.Nullable", "org.eclipse.jdt.annotation.Nullable"));
+			this.preferenceManager.getPreferences().setNonnullbydefaultTypes(List.of("org.eclipse.jdt.annotation.NonNullByDefault", "javax.annotation.ParametersAreNonnullByDefault"));
+			this.preferenceManager.getPreferences().setNullAnalysisMode(FeatureStatus.automatic);
+			List<IProject> projects = importProjects("eclipse/testnullable3");
+			IProject project = projects.get(0);
+			assertIsJavaProject(project);
+			boolean updated = this.preferenceManager.getPreferences().updateAnnotationNullAnalysisOptions();
+			assertFalse(updated);
+			projects = importProjects("eclipse/testnullable2");
+			project = projects.get(0);
+			assertIsJavaProject(project);
+			updated = this.preferenceManager.getPreferences().updateAnnotationNullAnalysisOptions();
+			assertTrue(updated);
+		} finally {
+			this.preferenceManager.getPreferences().setNonnullTypes(Collections.emptyList());
+			this.preferenceManager.getPreferences().setNullableTypes(Collections.emptyList());
+			this.preferenceManager.getPreferences().setNonnullbydefaultTypes(Collections.emptyList());
+			this.preferenceManager.getPreferences().updateAnnotationNullAnalysisOptions();
+			this.preferenceManager.getPreferences().setNullAnalysisMode(FeatureStatus.disabled);
+		}
+	}
+
 }