org.sonar.l10n.java.rules.squid.S2251.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of java-checks Show documentation

The newest version!

A for loop with a counter that moves in the wrong direction is not an infinite loop. Because of wraparound, the loop will eventually reach its stop condition, but in doing so, it will run many, many more times than anticipated, potentially causing unexpected behavior. 

Noncompliant Code Example
public void doSomething(String [] strings) {
  for (int i = 0; i < strings.length; i--) { // Noncompliant;
    String string = strings[i];  // ArrayIndexOutOfBoundsException when i reaches -1
    //...
  }


Compliant Solution
public void doSomething(String [] strings) {
  for (int i = 0; i < strings.length; i++) {
    String string = strings[i];
    //...
  }