Eclipse windowbuilder-swt安装
help->install new software->add right to arrow down,click,then click…windowbuilder/latest,select all.or
help-＞eclipse marketplace client->find to install any plugins.
Still org.eclipse error
Right click project
Builde path-＞configure build path->click classpath-＞add external jars->downloaded:org.eclipse.swt.gtk.linux_x86_3.117.0.v20210906-842.jar
