Too many control variables in for loop

Docs > Code Analysis > Static Analysis Rules > Too many control variables in for loop

Cette page n'est pas encore disponible en français, sa traduction est en cours.
Si vous avez des questions ou des retours sur notre projet de traduction actuel, n'hésitez pas à nous contacter.

Metadata

ID: java-best-practices/forloop-variable-count

Language: Java

Severity: Warning

Category: Best Practices

Description

The presence of multiple control variables in a for loop can obscure the range of values over which the loop iterates and make your code brittle and difficult to debug.

To follow this rule, regular for loops should have only one control variable.

Arguments

max-variables: Maximum number of control variables. Default: 1.

Non-Compliant Code Examples

public class Main {
   public void foo() {
      for (int i = 0, j = 0; i < 10; i++, j += 2) { // more than one control variable
         foo();
      }
   }
}

Compliant Code Examples

public class Main {
   public void foo() {
      for (int i = 0; i < 10; i++) {
         foo();
      }
   }
}