fix warning about Field.isAccessible()

'The method isAccessible() from the type AccessibleObject is deprecated
since version 9'

Author: EcljpseB0T

runtime/bundles/org.eclipse.e4.core.di/src/org/eclipse/e4/core/internal/di/ConstructorRequestor.java

@@ -31,17 +31,15 @@ public ConstructorRequestor(Constructor<?> constructor, IInjector injector, Prim
 	@Override
 	public Object execute() throws InjectionException {
 		Object result = null;
-		if (!location.isAccessible()) {
-			location.setAccessible(true);
-		}
 		boolean pausedRecording = false;
 		if ((primarySupplier != null)) {
 			primarySupplier.pauseRecording();
 			pausedRecording = true;
 		}
 		try {
+			location.trySetAccessible();
 			result = location.newInstance(actualArgs);
-		} catch (IllegalArgumentException | IllegalAccessException e) {
+		} catch (IllegalArgumentException | IllegalAccessException | SecurityException e) {
 			throw new InjectionException(e);
 		} catch (InstantiationException e) {
 			throw new InjectionException("Unable to instantiate " + location, e); //$NON-NLS-1$

runtime/bundles/org.eclipse.e4.core.di/src/org/eclipse/e4/core/internal/di/FieldRequestor.java

@@ -44,12 +44,10 @@ private boolean setField(Field field, Object value) throws InjectionException {
 		Object userObject = getRequestingObject();
 		if (userObject == null)
 			return false;
-		if (!field.isAccessible()) {
-			field.setAccessible(true);
-		}
 		try {
+			field.trySetAccessible();
 			field.set(userObject, value);
-		} catch (IllegalArgumentException | IllegalAccessException e) {
+		} catch (IllegalArgumentException | IllegalAccessException | SecurityException e) {
 			throw new InjectionException(e);
 		}
 		return true;

runtime/bundles/org.eclipse.e4.core.di/src/org/eclipse/e4/core/internal/di/MethodRequestor.java

@@ -46,17 +46,15 @@ public Object execute() throws InjectionException {
 		if (userObject == null)
 			return null;
 		Object result = null;
-		if (!location.isAccessible()) {
-			location.setAccessible(true);
-		}
 		boolean pausedRecording = false;
 		if ((primarySupplier != null)) {
 			primarySupplier.pauseRecording();
 			pausedRecording = true;
 		}
 		try {
+			location.trySetAccessible();
 			result = location.invoke(userObject, actualArgs);
-		} catch (IllegalArgumentException | IllegalAccessException e) {
+		} catch (IllegalArgumentException | IllegalAccessException | SecurityException e) {
 			throw new InjectionException(e);
 		} catch (InvocationTargetException e) {
 			Throwable originalException = e.getCause();