Which is better for learning Java

7 tips to learn Java


Developed by Sun Microsystems, Java is a leader in cross-platform programming and app development.

The reason Java has gained such a large following and unprecedented popularity is because the language offers a very simple and efficient approach to performing various programming tasks and helping developers.

Below are 7 tips that could help you get started as a Java developer or take you to the next level in programming language.

1. Solidify your Java basics

Because Java offers so many features and options for developers, beginners are often tempted to learn too many things in too short a time.

The result of this is surface knowledge in many areas. However, the most important basics hang by a thin thread.

Believe me when I tell you as a longtime Java developer that Java is easy to learn if you follow the basics. Yes, it can be frustrating to grapple with the basics until you've finally understood them. The, from my point of view, worse variant of learning Java is to think in the short term and to constantly jump on the latest trend or the latest library.

2. Learning takes place in practice

If you are only learning Java for one exam during your studies, then you can deal almost exclusively with the theory.

However, if you have higher goals to become a software developer or to build the next cool Android app, then you should get away from theory and practice as soon as possible. The best way to learn the many tools of programming is to practice. In our blog you will find numerous interesting project ideas that are suitable for Java beginners.

In short: look at the theory and then implement what you have learned in the form of code. You can never learn Java if you are not willing to get your hands dirty.

3. Paper is your friend: understand your code and algorithm

Even if you are only trying to solve a minor problem with your code, e.g. with an if-query, write your code on a piece of paper.

Once you have the idea behind the code on a piece of paper, you will understand your code much better on the computer.

Even for experienced developers, this is the best way to solve a complex problem or formulate an algorithm to solve a Java program. It is helpful to break the problem down into parts and then try to find a solution for each part.

When you start to find the right solutions, your confidence will build to program even more.

4. Remember the memory allocation

This tip is especially useful for those moving from C, C ++ to Java.

The memory allocation in Java with the keyword 'new' is a necessity as Java is a dynamic programming language.

C, C ++ doesn't explicitly have this feature, so you need to be careful when dealing with array and object declaration in Java. Failure to use the "new" keyword throws an exception in the code.

5. Avoid pointless objects

When you create an object in Java, you consume memory and processor resources. Since the creation of an object is incomplete without allocating memory to it, it is better to keep the demands on the object under control and not to create unwanted objects in your code.

public class vehicles {public List getVehicles () {if (null == vehicles) {// ensures that the object is only initialized when it is needed country = new ArrayList (); } return vehicles; }}

6. The standard library is a bliss

A big advantage that Java has over its predecessors is the huge selection of standard libraries. Using Java's standard library makes your job as a developer easy and efficient. It also gives you a well-organized coding process. With the methods specified in the library, various operations can be easily carried out without solving these problems with a lot of your own code.

7. Handling strings

Since Java sees the String as a class, simply concatenating two strings could result in the creation of a new String object in Java. This in turn has an effect on the RAM and the speed of the system. So it is better to instantiate a String object directly without using the constructor for this purpose.

Sounds complicated?

Here is a code example:

String mytext1 = new String ("I need more memory"); String meintext2 = "I am created faster";

These were the 7 best tips for learning Java. Check out the other Java tutorials on our blog to understand the basics of the language step-by-step.