Garbage Collector root Local variables in the main method The main thread Static variables of the main class Mark and Sweep Algorithm The ...

Static memory (Method area) Method information and Field information. Global constants and other data generated by the compiler(e.g. info to ...

Java is Easy to write and more readable and eye catching. Java has a concise, cohesive set of features that makes it easy to learn and use. Most ...

concat() and + both add up strings. It looks same, but + do one more step. As seen below, + will create string builder and append the strings ...

Error is thrown by JVM in a scenario which is fatal and there is no way for the application program to recover from that error. Unchecked type: ...

Wait and sleep method are completely different to each other wait() & notify(): method for inter thread communication. sleep(): introducing ...

While running multi-threads, there will be a significant problem when those threads try to use same resource. For example, multiple people try to ...

Basic types for characters, different kinds of integers, and different kinds of floating point numbers (numbers with a decimal point), and also ...

It will give you current time in nanoseconds(precise). Usually used for measuring performance of the code. To convert it to in seconds, divide it ...