notes on core java in java

The default value of an String type is null. In Java, variables of the String type are automatically initialized to null. This means that if you declare a String variable but don’t explicitly assign a value to it, it will have the default value of null. Here’s an example: java public class Example { public static void main(String[] … Read more

A thread enters the waiting state when it blocks on I/O. In Java, when a thread blocks on I/O (Input/Output) operations, it enters the “BLOCKED” state. The “BLOCKED” state indicates that the thread is waiting for a monitor lock to enter or re-enter a synchronized block/method or waiting for some resource to become available. It’s … Read more

Order of precedence determines the order in which operators are evaluated in expressions. Associatity determines whether an expression is evaluated left-to-right or right-to-left. In Java, operators have a specific order of precedence and associativity, which determine the sequence in which multiple operators are evaluated within an expression. Order of Precedence: The order of precedence defines … Read more

Yes, a for statement can loop indefinitely. For example, consider the following: for(;;) ; Yes, a for statement in Java can be designed to loop indefinitely. This typically happens when the loop control variables are set up in a way that the exit condition is never satisfied. For example: java for (;;) { // This … Read more

A native method is a method that is implemented in a language other than Java. In the context of Core Java, a native method refers to a method whose implementation is written in a language other than Java. This allows Java applications to call functions that are written in languages like C or C++. Native … Read more