How to print exception information ?

StackTrace how to use a line of code to append to a file ?
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e.printStackTrace(new PrintStream(new FileOutputStream("error.txt")));

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  Sentence can not find the file itself will throw an exception .  
file operation will certainly be the exception, only to catch or throw

try{e.printStackTrace(new PrintStream(new FileOutputStream("error.txt",true)));}catch (FileNotFoundException e1){e1.printStackTrace();}

say this is just line code
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e.printStackTrace(new PrintStream(new FileOutputStream("error.log", true)));

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should do if you want to append

e.printStackTrace(new PrintStream(new FileOutputStream("error.txt",true)));

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Sentence can not find the file itself will throw an exception .
------ For reference only -------------------------------------- -

    
    Sentence can not find the file itself will throw an exception .          
file operation will certainly be the exception, only to catch or throw   
  

try{e.printStackTrace(new PrintStream(new FileOutputStream("error.txt",true)));}catch (FileNotFoundException e1){e1.printStackTrace();}

  
say this is just    line code  
. Thank you .