How many ways to create object in Java? The answer is there are many ways but in this tutorial I am sharing the 5 ways to do this. Using new Keyword Using object cloning Using Class.forName() Using Class Loader Using Object Deserialization Below I have discussed each of these methods one by one with example. …
Here you will get answer for very basic question asked by beginners i.e. can we overload main method in Java? A function is overloaded in java by changing the number of arguments or their type. The main method can also be overloaded in the same way we overload any other method. How Can We Overload main Method …
Here you will get factorial program in java using loop and recursion. What is Factorial? We can find factorial of any number by repeatedly multiplying it with all the numbers below it which are greater than 0. For example factorial of 3 is 6 (1 x 2 x 3). Factorial Program in Java Using Loop …
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Here you will get java program for prime number. A number is said to be prime number if it is only divisible by 1 or itself. For example 2, 3, 5, 11, 13, etc are prime numbers. We can check a number is prime or not by following method. If all the numbers between 2 …
Here you will get java program for palindrome number. A number is said palindrome if its is equal to its reverse. For example, 131 is palindrome while 123 is not. Below I have shared two ways to check palindrome in java. Java Program for Palindrome Number Method 1: In this method we will reverse the …
In this tutorial you will learn about static keyword in Java with example code. Static keyword in java mainly used for memory management process. In Java static keyword can be used in following cases. With Variables With Methods With Blocks With Nested Class Lets discuss each of them one by one. Static Keyword in Java …
In this tutorial you will learn about difference between throw and throws keywords in java with example. When we run a java program which contains errors, programmers should handle errors by exception handling (using try, catch and finally blocks) or avoid (throw) it. Otherwise JVM will give error which causes the termination of the running …
Here you will learn about difference between Hashtable and HashMap in Java. Both Hashtable and HashMap are data-structure based upon hashing and implementation of Map interface, and almost seems to be similar but there is significant difference between both which is described as follows. Characteristic Hashtable HashMap Synchronization Hashtable is synchronized internally. Synchronization means that …
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