Here you will learn to solve error “cannot make a static reference to the non-static method” or “non static method cannot be referenced from a static context”. Lets take one example where this error occurs. When you will compile below code then you will get an error. public class DemoClass { void print() { System.out.println(“Hello …
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Here you will learn to implement JDBC transaction management in java. By default database is in auto commit mode. That means for any insert, update or delete operation the changes takes place immediately in database. What is Transaction? Transaction involves several sql queries that are considered as one unit. For example money transfer done in …
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Here I will discuss about some important advantages and disadvantages of Java language. Advantages of Java There are several advantages or merits of java that are explained below. Platform Independent It is one of the biggest merit of java language. When a java program is compiled it is converted into .class file or byte code. …
Here you will learn about pascal triangle in java with a program example. What is Pascal’s Triangle? It is a triangular array of the binomial coefficients. It is a number pattern which starts with 1 at top and then placing numbers below it in triangular pattern. Each number is obtained by adding two numbers above …
Here you will learn about difference between java, core java and advance java. Mostly beginner java programmers have confusion about these 3 terms in their mind. Below I have explained them to clear their confusion. Java It is a high level programming language. Java is available in three flavors. Java Standard Edition (J2SE or JSE) …
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Here you will learn how to create executable jar file in eclipse. An eclipse ide provides facility to convert a project into executable jar file in java. This process is really helpful in case you have development some desktop application in java and want an executable file to directly run the application. Also Read: How to Add …
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Can we override static method? is another important java interview question. Lets first take a look on what is method overriding. Method Overriding: When parent and child class have methods with same signature then it is called as method overriding. At run time compiler decides which method to call depending upon object type. Also Read: Can We Overload …
Here you learn how to change tomcat port number. The default port number of tomcat is 8080. If the port number assigned to tomcat is used by any other application then you can’t run tomcat on that port. In that situation the only solution is to change tomcat default port number. There are two ways …