# 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.
You Want To Have Those Changes Done Automatically?
The automatic application of this rule is supported in the following jSparrow version:
# Properties
| Property | Value |
|---|---|
| Rule ID | WhileToForEach |
| First seen in jSparrow version | 1.0.0 |
| Minimum Java version | 5 |
| Remediation cost | 5 min |