Cacher is the code snippet organizer for pro developers

Envrionment Setup

• Atlassian's guide to setup Eclipse IDE for linux.
• CompileJava an online java compiler.

Template project

• A template project by mplacona, not to start from scratch.

Fill an instance list with the same object

List<SomeObject> list = new ArrayList<> (Collections.nCopies(70, someObject));

Ref: SO answer