diff --git a/eclient/org.eclipse.statet.rj.eclient.graphics/src/org/eclipse/statet/rj/eclient/graphics/RGraphicsPreferencePage.java b/eclient/org.eclipse.statet.rj.eclient.graphics/src/org/eclipse/statet/rj/eclient/graphics/RGraphicsPreferencePage.java
index d09542c..0ab1735 100644
--- a/eclient/org.eclipse.statet.rj.eclient.graphics/src/org/eclipse/statet/rj/eclient/graphics/RGraphicsPreferencePage.java
+++ b/eclient/org.eclipse.statet.rj.eclient.graphics/src/org/eclipse/statet/rj/eclient/graphics/RGraphicsPreferencePage.java
@@ -23,7 +23,7 @@
 import org.eclipse.core.databinding.DataBindingContext;
 import org.eclipse.core.databinding.UpdateValueStrategy;
 import org.eclipse.core.databinding.observable.Realm;
-import org.eclipse.core.databinding.observable.value.IValueChangeListener;
+import org.eclipse.core.databinding.observable.value.IObservableValue;
 import org.eclipse.core.databinding.observable.value.ValueChangeEvent;
 import org.eclipse.core.databinding.observable.value.WritableValue;
 import org.eclipse.core.runtime.IStatus;
@@ -32,7 +32,7 @@
 import org.eclipse.core.runtime.preferences.IEclipsePreferences;
 import org.eclipse.core.runtime.preferences.IScopeContext;
 import org.eclipse.core.runtime.preferences.InstanceScope;
-import org.eclipse.jface.databinding.swt.SWTObservables;
+import org.eclipse.jface.databinding.swt.WidgetProperties;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.viewers.ArrayContentProvider;
@@ -184,8 +184,8 @@
 	private Text customVDpiControl;
 	
 	private boolean customEnabled;
-	private WritableValue customHDpiVisibleValue;
-	private WritableValue customVDpiVisibleValue;
+	private IObservableValue<Double> customHDpiVisibleValue;
+	private IObservableValue<Double> customVDpiVisibleValue;
 	private double customHDpiUserValue;
 	private double customVDpiUserValue;
 	
@@ -392,44 +392,42 @@
 		addBindings(this.dbc, realm);
 		
 		final AggregateValidationStatus validationStatus= new AggregateValidationStatus(this.dbc, AggregateValidationStatus.MAX_SEVERITY);
-		validationStatus.addValueChangeListener(new IValueChangeListener() {
-			@Override
-			public void handleValueChange(final ValueChangeEvent event) {
-				final IStatus currentStatus= (IStatus) event.diff.getNewValue();
-				updateStatus(currentStatus);
-			}
-		});
+		validationStatus.addValueChangeListener(
+				(final ValueChangeEvent<? extends IStatus> event) -> {
+					final IStatus currentStatus= event.diff.getNewValue();
+					updateStatus(currentStatus);
+				} );
 	}
 	
 	protected void addBindings(final DataBindingContext dbc, final Realm realm) {
-		this.customHDpiVisibleValue= new WritableValue(realm, 96.0, Double.class);
-		this.customVDpiVisibleValue= new WritableValue(realm, 96.0, Double.class);
+		this.customHDpiVisibleValue= new WritableValue<>(realm, 96.0, Double.class);
+		this.customVDpiVisibleValue= new WritableValue<>(realm, 96.0, Double.class);
 		
-		dbc.bindValue(SWTObservables.observeText(this.customHDpiControl, SWT.Modify),
+		dbc.bindValue(
+				WidgetProperties.text(SWT.Modify).observe(this.customHDpiControl),
 				this.customHDpiVisibleValue,
 				new UpdateValueStrategy().setAfterGetValidator(new DecimalValidator(10.0, 10000.0,
-						"The value for Horizontal (x) DPI is invalid (10-10000)." )), null);
-		dbc.bindValue(SWTObservables.observeText(this.customVDpiControl, SWT.Modify),
+						"The value for Horizontal (x) DPI is invalid (10-10000)." )),
+				null );
+		dbc.bindValue(
+				WidgetProperties.text(SWT.Modify).observe(this.customVDpiControl),
 				this.customVDpiVisibleValue,
 				new UpdateValueStrategy().setAfterGetValidator(new DecimalValidator(10.0, 10000.0,
-						"The value for Vertical (x) DPI is invalid (10-10000)." )), null);
+						"The value for Vertical (x) DPI is invalid (10-10000)." )),
+				null );
 		
-		this.customHDpiVisibleValue.addValueChangeListener(new IValueChangeListener() {
-			@Override
-			public void handleValueChange(final ValueChangeEvent event) {
-				if (RGraphicsPreferencePage.this.customEnabled) {
-					RGraphicsPreferencePage.this.customHDpiUserValue= (Double) RGraphicsPreferencePage.this.customHDpiVisibleValue.getValue();
-				}
-			}
-		});
-		this.customVDpiVisibleValue.addValueChangeListener(new IValueChangeListener() {
-			@Override
-			public void handleValueChange(final ValueChangeEvent event) {
-				if (RGraphicsPreferencePage.this.customEnabled) {
-					RGraphicsPreferencePage.this.customVDpiUserValue= (Double) RGraphicsPreferencePage.this.customVDpiVisibleValue.getValue();
-				}
-			}
-		});
+		this.customHDpiVisibleValue.addValueChangeListener(
+				(final ValueChangeEvent<? extends Double> event) -> {
+					if (RGraphicsPreferencePage.this.customEnabled) {
+						RGraphicsPreferencePage.this.customHDpiUserValue= RGraphicsPreferencePage.this.customHDpiVisibleValue.getValue();
+					}
+				} );
+		this.customVDpiVisibleValue.addValueChangeListener(
+				(final ValueChangeEvent<? extends Double> event) -> {
+					if (RGraphicsPreferencePage.this.customEnabled) {
+						RGraphicsPreferencePage.this.customVDpiUserValue= RGraphicsPreferencePage.this.customVDpiVisibleValue.getValue();
+					}
+				} );
 	}
 	
 	protected void updateStatus(final IStatus status) {