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To append to a text fileUse the WriteAllText method, specifying the target file and string to be appended and setting the append parameter to True . This example writes the string "This is a test string." to the file named Testfile. txt .
append("New Line!"); output.
In Python, the new line character “\n” is used to create a new line.
You should put the \n first. That way your newline will be written before your text:
f.append('\nhello again!')
Yet another way of doing this. In this case, you don't have to add the newline character manually
File greetingsFile = new File("myfile.txt")
greetingsFile.withWriterAppend{ out ->
out.println 'hello again!'
}
You can always get the correct new line character through
System.getProperty("line.separator")
so added it before your text
Groovy's concise syntax for writing into file:
f << '\n' << 'hello again'
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