java - How to write mutilple lines in a text file by calling same method different time? -

i come problem.

this method below:

public void somemethod() {     stringbuilder newfile = new stringbuilder();     string edited = "my string line";     newfile.append(edited);     newfile.append("\n");     filewriter fstreamwrite = new filewriter("transaction.txt");     bufferedwriter out = new bufferedwriter(fstreamwrite);     out.write(newfile.tostring());     out.close(); } 

and when calling method in main class more 1 time code creating transaction.txt line "my string line". when call method more 1 time write "my string line" several time, overriding line , not giving me output like.

my string line

my string line

my string line

when call method 3 times.

any idea how write same line multiple times calling same method multiple times?

i think want append file . can use constructor filewriter(java.io.file,boolean):

parameters:

file - file object write to

append - if true, bytes written end of file rather beginning

hence change code :

new filewriter("transaction.txt",true); 

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to write new line file , use bufferedwriter#newline().

writes line separator. line separator string defined system property line.separator, , not single newline ('\n') character.