จาวาเขียนข้อความไปยังแฟ้ม
รหัสตัวอย่าง
การเขียนไปเป็นแฟ้มในงานจาวา
import java.io.FileWriter; // Import the FileWriter class
import java.io.IOException; // Import the IOException class to handle errors
public class WriteToFile {
public static void main(String[] args) {
try {
FileWriter myWriter = new FileWriter("filename.txt");
myWriter.write("Files in Java might be tricky, but it is fun enough!");
myWriter.close();
System.out.println("Successfully wrote to the file.");
} catch (IOException e) {
System.out.println("An error occurred.");
e.printStackTrace();
}
}
}เขียนแฟ้มของจาวา
@Test
public void givenUsingJava7_whenWritingToFile_thenCorrect()
throws IOException {
String str = "Hello";
Path path = Paths.get(fileName);
byte[] strToBytes = str.getBytes();
Files.write(path, strToBytes);
String read = Files.readAllLines(path).get(0);
assertEquals(str, read);
}
จาวาเขียนไปยังแฟ้ม
import java.io.FileWriter; // Import the FileWriter class
import java.io.IOException; // Import the IOException class to handle errors
public class WriteToFile {
public static void main(String[] args) {
try {
FileWriter fw = new FileWriter("C:/path/to/filename.txt");
fw.write("this is how u write a string");
fw.write(String.valueOf(108)); // cast number to string
myWriter.close();
} catch (IOException e) {
..
}
}
}
งานจาวาอสายข้อมูลเขียนไปยังแฟ้ม
@Test
public void givenWritingStringToFile_whenUsingPrintWriter_thenCorrect()
throws IOException {
FileWriter fileWriter = new FileWriter(fileName);
PrintWriter printWriter = new PrintWriter(fileWriter);
printWriter.print("Some String");
printWriter.printf("Product name is %s and its price is %d $", "iPhone", 1000);
printWriter.close();
}หน้าคล้ายกัน
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