# Replace While-Loop with Enhanced For-Loop
# Description
Applying this rule replaces While-loops over iterators with an equivalent for-loop.
# Benefits
Applying this rule leads to more simplicity in the code base by using new language constructs.
# Tags
# Code Changes
Pre
public String testWhileToFor(String input) {
List<String> l = generateList(input);
StringBuilder sb = new StringBuilder();
Iterator<String> iterator = l.iterator();
while (iterator.hasNext()) {
String s = iterator.next();
sb.append(s);
}
return sb.toString();
}
Post
public String testWhileToFor(String input) {
List<String> l = generateList(input);
StringBuilder sb = new StringBuilder();
for (String s : l) {
sb.append(s);
}
return sb.toString();
}
# Limitations
Loops where the body modifies the iterator in some way will not be transformed.
🛠️ Auto-refactor Available
You can auto-refactor this with jSparrow.
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# Properties
| Property | Value |
|---|---|
| Rule ID | WhileToForEach |
| First seen in jSparrow version | 1.0.0 |
| Minimum Java version | 5 |
| Remediation cost | 5 min |