Eclipse Problems View doesn't show Errors

Question

[Note: There is another thread about this problem but it did not answer the question.]

For one specific project in Eclipse, the problems view does not show errors. I

Answer 1

Here is the solution I use when the red icons do not appear on the project tree to highlight errors in our project files from Eclipse (Windows version).

Make sure Eclipse is running on the correct JVM. By default, it will use the latest JRE classpath stored in a registry. If you need to run Eclipse from a JDK instead of JRE, you need to tell Eclipse. So, add the -vm option at the top of the eclipse.ini to refer to our preferred JDK as follows:

-vm 
C:\Program Files\Java\jdk1.7.0_21/bin/javaw.exe

Remember to change this when you are upgrading your JRE/JDK.

However, we may encounter issue with Maven complaining about tools.jar in a project's pom.xml. If Eclipse is running on Java JRE instead of JDK, it can be a problem to some Maven plugins like maven-bundle-plugin that still rely on tools.jar which only exists on JDK, causing it to complain. Don't worry about it if your still prefer to run Eclipse using JRE as you can put this entry inside your project's pom.xml to explicitly refer to the right tools.jar:

    
        default-profile
        
            true
            
                ${java.home}/../lib/tools.jar
            
        
        
            ${java.home}/../lib/tools.jar
        
    
    
        windows_profile
        
            
                Windows
            
        
        
            ${java.home}/../lib/tools.jar
        
    
    
        osx_profile
        
            
                mac
            
        
        
            ${java.home}/../Classes/classes.jar