Understanding Java Security Manager in 5 minutes or less

General Idea The general idea of Java Security Manager is to restrict what an application can do. This is important as it provides a separate environment for programs to do whatever they do without affecting the host system or other

Java – break outer loop from inner loop

Whenever you use break; (or continue;), by default it only affects the current loop where it is invoked . If you are in a inner loop, surely the only loop that you can break; from is that loop. What if you need to break; from the outer-most loop in order to proceed to the next set of instructions?

Eclipse – Highlight selected text

I’ve been using this copy of Eclipse Mars since last year but only noticed today that selected texts are not highlighted. So, I thought maybe they made it configurable or turned off by default.

Array-backed Lists in Java

In Java, there are these array-backed lists that are generated when you convert arrays to lists using Arrays.asList(…). The list and the array objects point to the same data stored in the heap. Changes to the existing contents through either the list or array result to changing the same data.

Java – Sort Objects in Collections

Before Java 8, sorting objects in collections is a bit awkward and verbose in terms of the amount of codes you need to put in. With Java 8, things got easier because of Lambda expressions.