There are several ways to write to files in Java. Here are some of the most common methods:

Using the FileWriter class: This class provides a convenient way to write text data to a file. Here's an example:
java
try (FileWriter writer = new FileWriter("filename.txt")) {
    writer.write("Hello, world!");
}

Using the BufferedWriter class: This class provides a more efficient way to write large amounts of text data to a file. Here's an example:
try (BufferedWriter writer = new BufferedWriter(new FileWriter("filename.txt"))) {
    writer.write("Hello, world!");
}

Using the PrintWriter class: This class provides a convenient way to write formatted text data to a file. Here's an example:
try (PrintWriter writer = new PrintWriter(new FileWriter("filename.txt"))) {
    writer.printf("Hello, %s!", "world");
}

Using the Files class: This class provides several static methods for reading and writing files. Here's an example:
String content = "Hello, world!";
Files.write(Paths.get("filename.txt"), content.getBytes());

These are just a few of the ways to write to files in Java. The best method to use will depend on the specific requirements of your application.
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