See here.

Subclipse running over SVNKit stores authentication information in configuration\org.eclipse.core.runtime\.keyring (see here and here for more information).

• You need to Disconnect the project in Subclipse before switching to new Subversive provider (see here).
• You can move temporary .svn folder from the root of your project somewhere, refresh the project, return it back and refresh again. Now you can yse Team → Share Project (see here).

From here:

You need to install 64-bit version of Silk SVN. Subclipse should find JavaHL on %PATH% and just work.

• For Apache Tomcat follow these instructions as well as WTP+Tomcat FAQ. If you have installed only WTP plugin, you also need “JST Server Adapters” (see here) to get Tomcat, JBoss & Oracle adapters.
• For Jetty see here and here:
  • The latest Eclise plugin can only work with Jetty 6.x.
  • For Jetty 7.x download Jetty common package from here and JSP 2.1 support from here (see also How do I install Jetty WTP Server Adapter for Eclipse 3.5?).

You need to copy .metadata/.plugins/org.eclipse.core.runtime/.settings folder.

After setting the tab policy for Java/XML/… editor, one needs to uncheck Insert spaces for tabs in Preferences → Editors → Text Editors.

Indeed, when you launch the application that uses console directly under Eclipse it will not work, as System.console() will return null. The solution is described here:

• either use BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
• or debug the Java application remotely (launch JVM with -Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,address=9090,server=y,suspend=y)

From Referencing log4j.dtd in log4j.xml:

You need to use the following declaration:

<!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd">

instead of:

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

From Exclude target folder from search results in eclipse:

Mark the target folders as “Derived” resource in properties. In quick search (Ctrl+Shift+R) screen in options (press the arrow in the top right corner) make sure that “Show derived resources” is unticked.

The problem is that the remote server uses the SSL certificate, which couldn't be verified by JRE. This means you have to add the missing authority certificate (if the remote certificate was signed by it) or add the remote certificated itself (if it is self-signed). The best way is to check this in Firefox (click on this icon in right-bottom corner) and export the necessary key. Then you need to manipulate the JRE default key storage and import the given certificate to it. Assuming that you are in $JAVA_HOME/jre/lib/security directory and C:\Temp\DigiCertHighAssuranceEVRootCA.crt is the exported certificate:

..\..\bin\keytool.exe -import -trustcacerts -keystore cacerts -storepass changeit -noprompt -alias DigiCertHighAssuranceEVRootCA -file C:\Temp\DigiCertHighAssuranceEVRootCA.crt

In case you import the self-signed certificate, skip the -trustcacerts key. changeit is a default password for the key store. For complete reference check keytool manual.

From Change value of 'Read timeout' of Eclipse's Update Manager:

Add -Dsun.net.client.defaultReadTimeout=30000 to your eclipse.ini.