Update an existing file in java

Question

I write this code to write data in a text file.

 Writer output = null;
   File file = new File("C:/HEADER.txt");
   output = new BufferedWriter(new FileWriter(file));
    output.write("hello");
    output.close();

I write this code to write over the file but what happened is that the data got deleted, and the only the new data appeared.

Writer output = null;
   File file = new File("C:/HEADER.txt");
   output = new BufferedWriter(new FileWriter(file));
    output.write("how are you");
    output.close();

Answer 1

try

new FileWriter(file, true)

this will open the file in append mode