Avoid creating FileStream directly
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ID: java-best-practices/avoid-filestream
Language: Java
Severity: Info
Category: Best Practices
The classes that creates FileInputStream and FileOutputStream triggers too much garbage collection. Instead, use methods from the nio package that cause less garbage collection.
class Main {
public static void main(String[] args) {
String filename = "/path/to/file.txt";
FileInputStream fis = new FileInputStream(filename);
FileOutputStream fos = new FileOutputStream(filename);
FileReader fr = new FileReader(filename);
FileWriter fw = new FileWriter(filename);
String s = new String("woeijf");
}
}
class Main {
public static void main(String[] args) {
String filename = "/path/to/file.txt";
try(InputStream is = Files.newInputStream(Paths.get(filename))) {
}
try(OutputStream os = Files.newOutputStream(Paths.get(filename))) {
}
try(BufferedReader br = Files.newBufferedReader(Paths.get(filename), StandardCharsets.UTF_8)) {
}
try(BufferedWriter wr = Files.newBufferedWriter(Paths.get(filename), StandardCharsets.UTF_8)) {
}
}
}
