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Processing Large Files in Java, Variation 3
--- ReadFileJavaApplicationBufferedReader2.java
+++ ReadFileJavaApplicationBufferedReader3.java
@@ -44,6 +45,7 @@
Instant commonNameStart = Instant.now();
ArrayList<String> firstNames = new ArrayList<>();
+ var namePat = Pattern.compile(", \\s*(([^ ]*), |([^ ]+))");
System.out.println("Reading file using " + Caller.getName());
@@ -55,20 +57,13 @@
String name = array1[7].strip();
names.add(name);
- if(name.contains(", ")) {
-
- String array2[] = (name.split(", "));
- String firstHalfOfName = array2[1].trim();
-
- if (!firstHalfOfName.isEmpty()) {
- if (firstHalfOfName.contains(" ")) {
- String array3[] = firstHalfOfName.split(" ");
- String firstName = array3[0].trim();
- firstNames.add(firstName);
- } else {
- firstNames.add(firstHalfOfName);
- }
+ var matcher = namePat.matcher(name);
+ if (matcher.find()) {
+ String s = matcher.group(2);
+ if (s == null) {
+ s = matcher.group(3);
}
+ firstNames.add(s);
}
String rawDate = array1[4].strip();
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