Replace For-Loop with Enhanced-For-Loop
Properties
| Property | Value |
|---|---|
| First seen in jSparrow version | 1.0.0 |
| Minimum Java version | 5 |
| Remediation cost | 5 min |
Description
Since Java 1.5 enhanced for-loops can be used to iterate over collections. This rule replaces old for-loops utilizing iterators with enhanced for-loops in order to improve readability.
Benefits
Applying this rule leads to more simplicity in the code base by using new language constructs.
Requirement & Tags
Requirements
Java 5
Code Changes
Pre
public String testConvertIteratorToForEach(String input) {
List<String> foo = generateList(input);
StringBuilder sb = new StringBuilder();
for (Iterator<String> iterator = foo.iterator(); iterator.hasNext();) {
String s = iterator.next();
sb.append(s);
}
return sb.toString();
}
Post
public String testConvertIteratorToForEach(String input) {
List<String> foo = generateList(input);
StringBuilder sb = new StringBuilder();
for (String s : foo) {
sb.append(s);
}
return sb.toString();
}
Limitations
Loops where the body modifies the iterator in some way will not be transformed.
Automatic Application of This Rule
The automatic application of this rule is supported in the following jSparrow versions: