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The type java.io.ObjectInputStream cannot be resolved. It is indirectly referenced from required .class files

Something happened in Java 8 Update 91 that broke existing JSP code. That seems pretty clear. Here is a sample of similar questions and bug reports: Unable to compile JSP file with JDK1.8.0_92 Spring MVC – Unable to compile class for JSP Unable to access CloudPlatform Client https://bugs.openjdk.java.net/browse/JDK-8155588 (closed as “not an issue”) https://bugs.openjdk.java.net/browse/JDK-8155223 (closed … Read more

What is the difference between Class Path and Build Path

The build path is used for building your application. It contains all of your source files and all Java libraries that are required to compile the application. The classpath is used for executing the application. This includes all java classes and libraries that are needed to run the java application. A Classpath is mandatory, the … Read more

Adding 3rd party jars to WEB-INF/lib automatically using Eclipse/Tomcat

Here are the instructions for Helios. For earlier releases, see SeanA’s answer. Project Properties -> Deployment Assembly Add -> Java Build Path Entries You should now see the list of libraries on your build path that you can specify for inclusion into your finished WAR. Select the ones you want and hit Finish.

Set Build path in Eclipse for ndk program

//goto Preference → Android → NDK and choose your ndk location or in your hidden .bashrc file add this below line export NDK_PATH=/home/padmakumar/android-ndk-r7b

Attach the Source in Eclipse of a jar

Use Java Source Attacher ! It does what eclipse should do – a right click context menu that says “Attach Java Source. It automatically downloads the source for you and attaches it. I’ve only hit a couple libraries it doesn’t know about and when that happens it lets you contribute the url back to the … Read more

Android – R cannot be resolved to a variable [duplicate]

I think I found another solution to this question. Go to Project > Properties > Java Build Path > tab [Order and Export] > Tick Android Version Checkbox Then if your workspace does not build automatically… Properties again > Build Project

Exclude a class from the build in Android Studio

AFAIK, IntelliJ allows to exclude packages. Open Project Structure (Ctrl + Alt + Shift + S in Linux) → Modules → Sources tab. However, if you would like to exclude only one class, use the Gradle build file. Android Studio uses Gradle, so in the build.gradle file, add a custom SourceSet inside the android configuration … Read more

Eclipse error: “The import XXX cannot be resolved”

Try cleaning your project by going to the following menu item: Project > Clean… If that doesn’t work, try removing the jars from the build path and adding them again.

ClassNotFoundException when using User Libraries in Eclipse build path

In project’s properties, go to Deployment Assembly. Add there the buildpath entries as well which you’ve manually added as user libraries. It’ll end up in /WEB-INF/lib of the deployed WAR.

How to set the java.library.path from Eclipse

Don’t mess with the library path! Eclipse builds it itself! Instead, go into the library settings for your projects and, for each jar/etc that requires a native library, expand it in the Libraries tab. In the tree view there, each library has items for source/javadoc and native library locations. Specifically: select Project, right click -> … Read more