Java using the replaceAll method -

Java using the replaceAll method -

i have code , reads text file array list , prints out array list. how can have read file , store array list , create uppercase lowercase letters , remove punctuations? have been looking on net couldn't find solutions.

for illustration text file can be:

it's sunny day today!

and result should be:

its sunny day today

.

import java.io.*; import java.util.*; public class junk { private static arraylist<string> list = new arraylist<string>(); public static void main (string[] args) { seek { scanner s = new scanner(new file("test.txt")); while (s.hasnext()) { list.add(s.next()); } } grab (exception e) { e.printstacktrace(); } int n = list.size(); for(int = 0; < n ; i++) { system.out.println(list.get(i)); } } }

this line of code here works , remove punctuation , makes letters lowercase works if string s = "blah blah blah;;;"

string s1 = s.replaceall("\\p{punct}|\\d","").tolowercase();

how can create work array list?

sorry, looks question updated during writing illustration code. rephrased question, guess means replaceall take effect not set arraylist. repalceall generate new string object , not impact 1 in array. needs repaceall after read file , before "add" arraylist object.

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try code snippet, may needs tuning justice of punctuation.

public void convert(string filename) throws filenotfoundexception, ioexception { list<string> list = new arraylist<string>(); bufferedreader reader = null; seek { reader = new bufferedreader(new filereader(filename)); string s = reader.readline(); while (s != null) { // should work in loop string s1 = s.replaceall("\\p{punct}|\\d","").tolowercase(); list.add(s1.tostring()); } } { if (reader != null) reader.close(); } (string s : list) { // not work in loop //string s1 = s.replaceall("\\p{punct}|\\d","").tolowercase(); // list.add(s1.tostring()); system.out.println(s); } }

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