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src/java.desktop/share/classes/javax/swing/text/html/FrameView.java

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@@ -67,11 +67,11 @@
 
         Element elem = getElement();
         AttributeSet attributes = elem.getAttributes();
         String srcAtt = (String)attributes.getAttribute(HTML.Attribute.SRC);
 
-        if ((srcAtt != null) && (!srcAtt.equals(""))) {
+        if (srcAtt != null && !srcAtt.isEmpty()) {
             try {
                 URL base = ((HTMLDocument)elem.getDocument()).getBase();
                 src = new URL(base, srcAtt);
                 htmlPane = new FrameEditorPane();
                 htmlPane.addHyperlinkListener(this);
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