Make plugin work on IJ 2023.2.4

Signed-off-by: Rob Stryker <[email protected]>

build.gradle

@@ -72,8 +72,8 @@ configurations {
         exclude group: 'org.slf4j', module: 'slf4j-api'
     }
     compileOptions {
-        sourceCompatibility = 11
-        targetCompatibility = 11
+        sourceCompatibility = 17
+        targetCompatibility = 17
     }
 
     integrationTestImplementation.extendsFrom testImplementation

gradle.properties

@@ -1,10 +1,10 @@
-ideaVersion=IC-2021.3
+ideaVersion=IC-2023.2.4
 # build number ranges
 # https://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/build_number_ranges.html
 sinceIdeaBuild=211
 projectVersion=0.7.0
 jetBrainsToken=invalid
 jetBrainsChannel=stable
-intellijPluginVersion=1.13.2
+intellijPluginVersion=1.16.0
 intellijCommonVersion=1.9.0
 fixturesVersion=1.1.18

src/main/java/com/redhat/devtools/intellij/rsp/actions/DeleteServerAction.java

@@ -21,7 +21,6 @@
 import com.redhat.devtools.intellij.rsp.ui.tree.RspTreeModel;
 import org.jboss.tools.rsp.api.dao.Status;
 
-import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.tree.TreePath;
 import java.awt.*;
@@ -54,7 +53,6 @@ public AreYouSureDialog(boolean plural) {
             setTitle(plural ? "Delete Servers?" : "Delete Server?");
         }
 
-        @Nullable
         @Override
         protected JComponent createCenterPanel() {
             JPanel dialogPanel = new JPanel(new BorderLayout());

src/main/java/com/redhat/devtools/intellij/rsp/ui/tree/RspTreeModel.java

@@ -186,7 +186,7 @@ protected DeployableStateDescriptor(DeployableStateWrapper element, @Nullable No
                             element.ds.getReference().getLabel() + "   [" +
                                     getRunStateString(element.ds.getState()) + ", " +
                                     getPublishStateString(element.ds.getPublishState()) + "]",
-                    IconLoader.getIcon("images/jar_obj.gif"));
+                    IconLoader.getIcon("images/jar_obj.png"));
         }
     }
 

src/main/java/com/redhat/devtools/intellij/rsp/util/RemoteServerProcess.java

@@ -67,7 +67,6 @@ public WinSize getWinSize() throws IOException {
         return null;
     }
 
-    @Override
     public int getPid() {
         return 0;
     }