Fix compatibility with Java 8

test/net/sourceforge/plantuml/cheneer/command/CommandAssociateTest.java

@@ -2,7 +2,7 @@ package net.sourceforge.plantuml.cheneer.command;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import java.util.List;
+import java.util.ArrayList;
 
 import org.junit.jupiter.api.Test;
 
@@ -20,7 +20,7 @@ public class CommandAssociateTest {
 
 	private final Command<ChenEerDiagram> command = new CommandAssociate();
 
-	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(List.of(), false), null);
+	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(new ArrayList<>(), false), null);
 
 	@Test
 	void test_parse() {

test/net/sourceforge/plantuml/cheneer/command/CommandCreateAttributeTest.java

@@ -2,7 +2,7 @@ package net.sourceforge.plantuml.cheneer.command;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import java.util.List;
+import java.util.ArrayList;
 
 import org.junit.jupiter.api.Test;
 
@@ -21,7 +21,7 @@ public class CommandCreateAttributeTest {
 
 	private final Command<ChenEerDiagram> command = new CommandCreateAttribute();
 
-	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(List.of(), false), null);
+	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(new ArrayList<>(), false), null);
 
 	@Test
 	void test_parse() {

test/net/sourceforge/plantuml/cheneer/command/CommandCreateEntityTest.java

@@ -2,7 +2,7 @@ package net.sourceforge.plantuml.cheneer.command;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import java.util.List;
+import java.util.ArrayList;
 
 import org.junit.jupiter.api.Test;
 
@@ -21,7 +21,7 @@ public class CommandCreateEntityTest {
 
 	private final Command<ChenEerDiagram> command = new CommandCreateEntity();
 
-	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(List.of(), false), null);
+	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(new ArrayList<>(), false), null);
 
 	@Test
 	void test_parseEntity() {

test/net/sourceforge/plantuml/cheneer/command/CommandEndGroupTest.java

@@ -2,7 +2,7 @@ package net.sourceforge.plantuml.cheneer.command;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import java.util.List;
+import java.util.ArrayList;
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -25,7 +25,7 @@ public class CommandEndGroupTest {
 	private final Command<ChenEerDiagram> command = new CommandEndGroup();
 
 	@Spy
-	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(List.of(), false), null);
+	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(new ArrayList<>(), false), null);
 
 	@Test
 	void test_parse() {

test/net/sourceforge/plantuml/cheneer/command/CommandMultiSubclassTest.java

@@ -2,7 +2,7 @@ package net.sourceforge.plantuml.cheneer.command;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import net.sourceforge.plantuml.core.UmlSource;
+import java.util.ArrayList;
 
 import org.junit.jupiter.api.Test;
 
@@ -10,19 +10,18 @@ import net.sourceforge.plantuml.abel.Link;
 import net.sourceforge.plantuml.cheneer.ChenEerDiagram;
 import net.sourceforge.plantuml.command.Command;
 import net.sourceforge.plantuml.command.CommandExecutionResult;
+import net.sourceforge.plantuml.core.UmlSource;
 import net.sourceforge.plantuml.decoration.LinkMiddleDecor;
 import net.sourceforge.plantuml.klimt.color.NoSuchColorException;
 import net.sourceforge.plantuml.regex.IRegex;
 import net.sourceforge.plantuml.regex.RegexResult;
 import net.sourceforge.plantuml.utils.BlocLines;
 
-import java.util.List;
-
 public class CommandMultiSubclassTest {
 
 	private final Command<ChenEerDiagram> command = new CommandMultiSubclass();
 
-	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(List.of(), false), null);
+	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(new ArrayList<>(), false), null);
 
 	@Test
 	void test_parse() {

test/net/sourceforge/plantuml/cheneer/command/CommandSimpleSubclassTest.java

@@ -2,7 +2,7 @@ package net.sourceforge.plantuml.cheneer.command;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import java.util.List;
+import java.util.ArrayList;
 
 import org.junit.jupiter.api.Test;
 
@@ -21,7 +21,7 @@ public class CommandSimpleSubclassTest {
 
 	private final Command<ChenEerDiagram> command = new CommandSimpleSubclass();
 
-	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(List.of(), false), null);
+	private final ChenEerDiagram diagram = new ChenEerDiagram(UmlSource.create(new ArrayList<>(), false), null);
 
 	@Test
 	void test_parseSubset() {