Question

What are the benefits of scope minimization in Java? Why is it a good technique to practice? Provide an appropriate source code example to illustrate your points.

Answer 1

What are the benefits of scope minimization in Java? Why is it a good technique to practice?

• Scope minimization helps programmers to avoid common programming errors so it is beneficial to a programmer to testing or running program.
• it will help to improve code readability by connecting the declaration and actual use of a variable of the program.
• Scope minimization also works as improves maintainability because unused variables are more easily detected and removed.
• it will detect local variables that are declared in a larger scope than it is compulsory required by the code as written is straightforward and can eliminate the possibility of false positives.

• it will detect multiple for statements that use in many times within the same index variable is straightforward; it produces false positives in the unusual case where the value of index variable takes place in the loop.  

source code example: -

• Without Scope Minimization Code Example

public class Abc {

  public static void main(String[] args) {

    int i = 0;

    for (i = 0; i < 123; i++) {

      // our operations

    }

  }

}

• With Scope Minimization Code Example

public class Abc {

  public static void main(String[] args) {

    for (int i = 0; i < 123; i++) { // Contains declaration

      // Do operations

    }

  }

}

NOTES:- In the above example we are minimizing the scope of variables, we declare a loop indices within the for statement