Java is one of the most robust and reliable programming languages when it comes to web application or Android mobile application development. It helps in developing applications with multiple complex functionalities to target different business niche like banking, healthcare, hospitality or any other media company.
But the complexities and functionalities involved in developing apps for each industry is different. As a result, it becomes imperative for the programmers to have a good coding methodology in place for write a bug-free, functional code. A good methodology enables developers visualize the solutions they are developing to ensure successful project deliveries. There are certain guidelines you need to follow before embarking your Java application development journey. As an Oracle Certified Partner, we recommend following the below-mentioned coding best practices that will help you write a bug-free Java code.
But the complexities and functionalities involved in developing apps for each industry is different. As a result, it becomes imperative for the programmers to have a good coding methodology in place for write a bug-free, functional code. A good methodology enables developers visualize the solutions they are developing to ensure successful project deliveries. There are certain guidelines you need to follow before embarking your Java application development journey. As an Oracle Certified Partner, we recommend following the below-mentioned coding best practices that will help you write a bug-free Java code.
5 Best Practices For Java Programming:
1. Do not depend on initialization:
Depending on the use of constructors to initialize an object is a big myth almost all Java developers follow. There are many other ways an object can be allocated without calling a constructor. Consider the following steps to do that:
While writing your code, you create some classes, methods and variables either as public or private. The private classes are not easily accessible, which makes it a secure point of code. Whereas the public methods and variables are easily accessible which become vulnerable to attacks. So, make them with limited scope. Always remember to make your classes, methods, and variables public when it’s the only option to do so.
3. Always predefine the scope:
Most developers completely depend on the scope of the packages instead of defining the scope of the code. There are numerous classes that aren’t closed by default, eventually leaving loopholes for the attackers. With the help of a single loophole, the attackers can insert their own class that utilizes the sensitive information from your code. Even JVM is not closed by default but allows you to close your classes within the package.
4. Avoid using inner classes:
Developers often use inner classes whenever they are needed in other classes in the same package. The inner classes are usually accessible to all other classes within the same package. However, it is already mentioned that you need to predefine the scope of all the classes you create in the code.
5. Ensure noncloneable classes:
Java includes a feature that helps to clone its own classes whenever required. But the attackers can make an adverse use of this feature. A hacker can easily utilize the java.lang.Cloneable to replicate instances of the code and steal confidential information from your code. In order to resolve this issue, you need to add the following code to each and every class you create in your code.
public final void clone()throws
java.lang.CloneNotSupportedException {
thrownewjava.lang.CloneNotSupportedException();
}
1. Do not depend on initialization:
Depending on the use of constructors to initialize an object is a big myth almost all Java developers follow. There are many other ways an object can be allocated without calling a constructor. Consider the following steps to do that:
- Declare all the variables as private and then use the GET and SET method to access the object outside the class
- Write a new private boolean variable for each object and initialize it
- Write a non-constructor class which ensures that each object is initialized before calling anywhere in the code
While writing your code, you create some classes, methods and variables either as public or private. The private classes are not easily accessible, which makes it a secure point of code. Whereas the public methods and variables are easily accessible which become vulnerable to attacks. So, make them with limited scope. Always remember to make your classes, methods, and variables public when it’s the only option to do so.
3. Always predefine the scope:
Most developers completely depend on the scope of the packages instead of defining the scope of the code. There are numerous classes that aren’t closed by default, eventually leaving loopholes for the attackers. With the help of a single loophole, the attackers can insert their own class that utilizes the sensitive information from your code. Even JVM is not closed by default but allows you to close your classes within the package.
4. Avoid using inner classes:
Developers often use inner classes whenever they are needed in other classes in the same package. The inner classes are usually accessible to all other classes within the same package. However, it is already mentioned that you need to predefine the scope of all the classes you create in the code.
5. Ensure noncloneable classes:
Java includes a feature that helps to clone its own classes whenever required. But the attackers can make an adverse use of this feature. A hacker can easily utilize the java.lang.Cloneable to replicate instances of the code and steal confidential information from your code. In order to resolve this issue, you need to add the following code to each and every class you create in your code.
public final void clone()throws
java.lang.CloneNotSupportedException {
thrownewjava.lang.CloneNotSupportedException();
}
If you still want to make your class cloneable considering the given consequences, all you need to do is protect it. Make your clone method ‘final’ if you are defining it yourself.
public final void clone()
throwsjava.lang.CloneNotSupportedException {
super.clone(); }
By keeping the above-mentioned best practices and Java programming concepts in mind, you can easily write a code without encountering any bug. Let us know your opinions on Java coding best practices through comments below.
public final void clone()
throwsjava.lang.CloneNotSupportedException {
super.clone(); }
By keeping the above-mentioned best practices and Java programming concepts in mind, you can easily write a code without encountering any bug. Let us know your opinions on Java coding best practices through comments below.