在Mars、Kepler的版本裡，時常會出現以下錯誤導致eclipse無法進行運作
Error.log
org.eclipse.swt.SWTError: No more handles at org.eclipse.swt.SWT.error(SWT.java:4517)
at org.eclipse.swt.SWT.error(SWT.java:4406)
at org.eclipse.swt.SWT.error(SWT.java:4377)
at org.eclipse.swt.widgets.Widget.error(Widget.java:482)
at org.eclipse.swt.widgets.Control.createHandle(Control.java:703)
at org.eclipse.swt.widgets.Label.createHandle(Label.java:199)
at org.eclipse.swt.widgets.Control.createWidget(Control.java:743)
...
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
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我們可以安裝WindowBuilder plugin來解決此問題。
WindowBuilder
URL：http://download.eclipse.org/windowbuilder/WB/integration/4.5/
Location：http://download.eclipse.org/windowbuilder/WB/integration/4.5/
Step1. Help -> Install New Software... 安裝WindowBuilder plugin
Step2. 進入Window -> Perferences
Step3. General -> Editors -> File Associations
Step4. 選擇*.java，預設使用WindowBuilder Editor開啟