Moved all streams into a try with resources setup

org.eclipse.draw2d.tests/src/org/eclipse/draw2d/test/TestImages.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2010 IBM Corporation and others.
+ * Copyright (c) 2004, 2024 IBM Corporation and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -13,29 +13,21 @@
 
 package org.eclipse.draw2d.test;
 
-import java.io.InputStream;
-
 import org.eclipse.swt.graphics.Image;
 
-public class TestImages {
-
- static final Image depth_8;
- static final Image depth_24;
-
- static {
- InputStream is = TestImages.class.getResourceAsStream("icons/bits8.gif"); //$NON-NLS-1$
- depth_8 = new Image(null, is);
- try {
- is.close();
- } catch (Exception e) {
- }
-
- is = TestImages.class.getResourceAsStream("icons/bits24.jpg"); //$NON-NLS-1$
- depth_24 = new Image(null, is);
- try {
- is.close();
- } catch (Exception e) {
- }
+import org.eclipse.jface.resource.ImageDescriptor;
+
+public final class TestImages {
+
+ static final Image depth_8 = loadImage("icons/bits8.jpg"); //$NON-NLS-1$
+ static final Image depth_24 = loadImage("icons/bits24.jpg"); //$NON-NLS-1$
+
+ private static Image loadImage(final String imageName) {
+ return ImageDescriptor.createFromFile(TestImages.class, imageName).createImage();
+ }
+
+ private TestImages() {
+ throw new UnsupportedOperationException("Utility class shall not be instantiated!"); //$NON-NLS-1$
  }
 
 }

org.eclipse.gef.examples.flow/src/org/eclipse/gef/examples/flow/ui/FlowWizardPage1.java

@@ -124,13 +124,10 @@ private static ActivityDiagram createWakeupModel() {
  protected InputStream getInitialContents() {
  ActivityDiagram diag = createWakeupModel();
  ByteArrayInputStream bais = null;
- try {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- ObjectOutputStream oos = new ObjectOutputStream(baos);
+ try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ ObjectOutputStream oos = new ObjectOutputStream(baos);) {
  oos.writeObject(diag);
  oos.flush();
- oos.close();
- baos.close();
  bais = new ByteArrayInputStream(baos.toByteArray());
  bais.close();
  } catch (Exception e) {

org.eclipse.gef.examples.logic/src/org/eclipse/gef/examples/logicdesigner/LogicEditor.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2022 IBM Corporation and others.
+ * Copyright (c) 2000, 2024 IBM Corporation and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -486,9 +486,9 @@ protected void configureZoomManager(ScrollingGraphicalViewer viewer, ZoomManager
  }
 
  protected void writeToOutputStream(OutputStream os) throws IOException {
- ObjectOutputStream out = new ObjectOutputStream(os);
- out.writeObject(getLogicDiagram());
- out.close();
+ try (ObjectOutputStream out = new ObjectOutputStream(os)) {
+  out.writeObject(getLogicDiagram());
+ }
  }
 
  @Override

org.eclipse.gef.examples.logic/src/org/eclipse/gef/examples/logicdesigner/LogicWizardPage1.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2022 IBM Corporation and others.
+ * Copyright (c) 2000, 2024 IBM Corporation and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -41,7 +41,7 @@
 
 public class LogicWizardPage1 extends WizardNewFileCreationPage implements SelectionListener {
 
- private IWorkbench workbench;
+ private final IWorkbench workbench;
  private static int exampleCount = 1;
  private Button model1 = null;
  private Button model2 = null;
@@ -90,13 +90,10 @@ protected InputStream getInitialContents() {
  ld = (LogicDiagram) LogicDiagramFactory.createLargeModel();
  }
  ByteArrayInputStream bais = null;
- try {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- ObjectOutputStream oos = new ObjectOutputStream(baos);
+ try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ ObjectOutputStream oos = new ObjectOutputStream(baos);) {
  oos.writeObject(ld);
  oos.flush();
- oos.close();
- baos.close();
  bais = new ByteArrayInputStream(baos.toByteArray());
  bais.close();
  } catch (Exception e) {
@@ -107,8 +104,7 @@ protected InputStream getInitialContents() {
 
  public boolean finish() {
  IFile newFile = createNewFile();
- if (newFile == null)
- {
+ if (newFile == null) {
  return false; // ie.- creation was unsuccessful
  }
 

org.eclipse.gef.examples.logic/src/org/eclipse/gef/examples/logicdesigner/model/LogicSubpart.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2022 IBM Corporation and others.
+ * Copyright (c) 2000, 2024 IBM Corporation and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -12,15 +12,14 @@
  *******************************************************************************/
 package org.eclipse.gef.examples.logicdesigner.model;
 
-import java.io.IOException;
-import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
 import org.eclipse.swt.graphics.Image;
 
+import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.ui.views.properties.IPropertyDescriptor;
 import org.eclipse.ui.views.properties.PropertyDescriptor;
 
@@ -51,13 +50,7 @@ public abstract class LogicSubpart extends LogicElement {
  }
 
  protected static Image createImage(Class rsrcClass, String name) {
- InputStream stream = rsrcClass.getResourceAsStream(name);
- Image image = new Image(null, stream);
- try {
- stream.close();
- } catch (IOException ioe) {
- }
- return image;
+ return ImageDescriptor.createFromFile(rsrcClass, name).createImage();
  }
 
  protected LogicSubpart() {

org.eclipse.gef.examples.shapes/src/org/eclipse/gef/examples/shapes/ShapesCreationWizard.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2023 Elias Volanakis and others.
+ * Copyright (c) 2004, 2024 Elias Volanakis and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -149,13 +149,11 @@ boolean finish() {
  @Override
  protected InputStream getInitialContents() {
  ByteArrayInputStream bais = null;
- try {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- ObjectOutputStream oos = new ObjectOutputStream(baos);
- oos.writeObject(createDefaultContent()); // argument must be
- // Serializable
+ try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ ObjectOutputStream oos = new ObjectOutputStream(baos);) {
+ // argument must be Serializable
+ oos.writeObject(createDefaultContent());
  oos.flush();
- oos.close();
  bais = new ByteArrayInputStream(baos.toByteArray());
  } catch (IOException ioe) {
  ioe.printStackTrace();

org.eclipse.gef.examples.shapes/src/org/eclipse/gef/examples/shapes/ShapesEditor.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2023 Elias Volanakis and others.
+ * Copyright (c) 2004, 2024 Elias Volanakis and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -123,9 +123,9 @@ public void commandStackChanged(EventObject event) {
  }
 
  private void createOutputStream(OutputStream os) throws IOException {
- ObjectOutputStream oos = new ObjectOutputStream(os);
- oos.writeObject(getModel());
- oos.close();
+ try (ObjectOutputStream oos = new ObjectOutputStream(os)) {
+  oos.writeObject(getModel());
+ }
  }
 
  /*

org.eclipse.gef.examples.shapes/src/org/eclipse/gef/examples/shapes/model/Shape.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2023 Elias Volanakis and others.
+ * Copyright (c) 2004, 2024 Elias Volanakis and others.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
@@ -12,13 +12,12 @@
  *******************************************************************************/
 package org.eclipse.gef.examples.shapes.model;
 
-import java.io.IOException;
-import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.List;
 
 import org.eclipse.swt.graphics.Image;
 
+import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.ui.views.properties.IPropertyDescriptor;
 import org.eclipse.ui.views.properties.PropertyDescriptor;
 import org.eclipse.ui.views.properties.TextPropertyDescriptor;
@@ -90,8 +89,10 @@ public abstract class Shape extends ModelElement {
  * @see #setPropertyValue(Object, Object)
  */
  static {
- descriptors = new IPropertyDescriptor[] { new TextPropertyDescriptor(XPOS_PROP, ShapesExampleMessages.Shape_X), // id and description pair
- new TextPropertyDescriptor(YPOS_PROP, ShapesExampleMessages.Shape_Y), new TextPropertyDescriptor(WIDTH_PROP, ShapesExampleMessages.Shape_Width),
+ // id and description pair
+ descriptors = new IPropertyDescriptor[] { new TextPropertyDescriptor(XPOS_PROP, ShapesExampleMessages.Shape_X),
+ new TextPropertyDescriptor(YPOS_PROP, ShapesExampleMessages.Shape_Y),
+ new TextPropertyDescriptor(WIDTH_PROP, ShapesExampleMessages.Shape_Width),
  new TextPropertyDescriptor(HEIGHT_PROP, ShapesExampleMessages.Shape_Height), };
  // use a custom cell editor validator for all four array entries
  for (IPropertyDescriptor descriptor : descriptors) {
@@ -108,13 +109,7 @@ public abstract class Shape extends ModelElement {
  } // static
 
  protected static Image createImage(String name) {
- InputStream stream = ShapesPlugin.class.getResourceAsStream(name);
- Image image = new Image(null, stream);
- try {
- stream.close();
- } catch (IOException ioe) {
- }
- return image;
+ return ImageDescriptor.createFromFile(ShapesPlugin.class, name).createImage();
  }
 
  /** Location of this shape. */