Java Exceptions & Errors:

• What is difference between error & exception in java ?
• What is difference between throw, throws & Throwable in java ?
• Generate Out of memory error in java
• Difference between checked & unchecked exception (class hierarchy)
• Simulate unchecked exceptions in java
• try with resources & AutoCloseable java 7
• Catch multiple exceptions before & after java 7
• Create custom or user defined unchecked exception 
• User defined custom Runtime/Unchecked exception