java build path problems [duplicate]

Answer 1

To configure your JRE in eclipse:

• Window > Preferences > Java > Installed JREs...
• Click Add
• Find the directory of your JDK > Click OK

Answer 2

Try this too in addition to MahmoudS comments. Change the maven compiler source and target in your pom.xml to the java version which you are using. Say 1.7 for jdk7

<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>

Answer 3

Here's a good discussion on this:

• How to use JDK 1.6 in 1.5 compliance mode

Basically you should

1. Download and install the 1.5 JDK. (download link)
2. In Eclipse, Go to Window → Preferences → Java → Installed JREs.
3. Add the 1.5 JDK to the list.
4. Select 1.5 as Compiler Compliance Level.

Answer 4

1. Right click on project, Properties, Java Build Path.
2. Remove the current JRE library.
3. Click Add library > JRE System Library > Workspace default JRE.

Answer 5

Go for the second option, Edit the project to agree with the latest JDK

• Right click "JRE System Library [J2SE 1.5] in your project"
• Choose "Properties"
• Select "Workspace default JRE (jdk1.6)

Answer 6

From the Package Explorer in Eclipse, you can right click the project, choose Build Path, Configure Build Path to get the build path dialog. From there you can remove the JRE reference for the 1.5 JRE and 'Add Library' to add a reference to your installed JRE.