String Search In File?

Aug 12, 2014

I am inputting a file that has the system output when pinging an ip address. i have gotten it to read the file into an arraylist with readLine. Is there a way to have it input to list using spaces instead of lines?

BufferedReader bf = new BufferedReader(new FileReader(file));
int linecount = 0;
int numberTimes = 0;
String line;
//loop thru file and add contents to an arraylist
while ((line = bf.readLine()) != null) {
inLine.add(line);
}
bf.close();
System.out.println(inLine);

get the arraylist to hold it like this:

(0)Pinging
(1)192.168.1.6
(2)with
(3)32
(4)bytes
(5)of
(6)data

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Search For A String In Large Text File Of 1 GB Size And Print Line When Match Found

Feb 18, 2014

I have a large text file of 1 GB size. I need to print the line when a matching word is found in a particular line. Below is the code I am using. But if there are many lines that has the matching word, it's taking lot of time. Any solution to print the lines much faster.

Scanner scanner = new Scanner(file);
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
if(line.contains("xyz")) {
System.out.println(line);
}
}

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How To Search For Two String In BST

May 6, 2015

I'm Trying to write a method that search for two String from node class and return the value but when i run it

Exception in thread "main" java.lang.NullPointerException

This is the code :

public Node findName(String firstName, String lastName) {
return findName(root, firstName,lastName);
}
private Node findName(Node p, String first,String last) {
if (p == null) {

[Code] .....

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Binary Search For String

May 26, 2015

I have problem in searching for the words from my text file.. im using binary search technique

private boolean doSearchQuery(String searchQuery) throws IOException {
Log.i(TAG, "in doSearchQuery, query string: " + searchQuery);
boolean result = false;
toSort = new ArrayList<String>();
myTv = (TextView) findViewById(R.id.myFile);

[Code] .....

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How To Compare String In Binary Search Tree

Aug 31, 2014

I'm trying to implement a Binary Search Tree that accepts strings. I cannot figure out how to compare the string value in my add method against the node object. While I could make the node class data be the string type I am trying to make the code be as reusable as possible. So my question is this, is there a simple way I can compare the two that I am missing?

public class BTNode<E> {
private E data;
private BTNode<E> left, right;
//constructor
public BTNode(E initialData, BTNode<E> initialLeft, BTNode<E> initialRight) {
data = initialData;
left = initialLeft;
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[Code] ....

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Oct 14, 2014

Which string method to search a particular character in a string whether a particular character is there or not . Suppose my String is like............

String s = "Java.";

How I can find the character " . " in above string "Java." is present or not . What is the string method to search that "."

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String In Java - Search Text On Document For A Word

Feb 5, 2014

Consider in a Document if a String " Hello" is Encoded and stored as "XYZAB"

I want to search the text on document for a word "Hello" and Replace the word with "HelloWorld"

The Program will encrypt the word "Hello" and Search the file then return the encrypted code as "XYZAB" Found

Now i have to replace the word "Hello" with "HelloWorld" in encrypted form so that the Letter "XYZABEFGHI" is replace in the place of Hello where "World" is encoded as "EFGHI"

Now the Problem is If there is more number of occurrence of the word "Helloworld" exist in the file... How can i Replace only one particular occurrence What can be done to select the particular occurrence.

I have attached my java program for Encryption along with this mail for your ease of use.

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Search For Certain Word In Text File

Mar 31, 2014

I need a java code to search a certain word from the text file. the word that i want to search is in other text file. and finally the output will print the result in the new text file. for the example the text file name data.txt and the word list in the wordlist.txt and the output will print filter.txt.

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Dec 9, 2014

In a text file, I have individual titles (starting with ">" character), and under those titles, I have calculated values for a Counter. I want to search the entire text file for the highest counter under every title. After I get the highest counter, I would like to print it's title, name of the counter, and counter value. Example of the code I already have:

int letterCounter;
String line;
if (line.startsWith (">")) {
bw.write ("");
bw.write (line);
} else {
//code that counts how many total letters (letterCounter) under title
}

I am just trying to use basic concepts.

Sample of my text file:

>gi 91206428 ref NP_001035160.1 seven transmembrane helix receptor precursor [Homo sapiens]
letterCounter is 43
>gi 157412240 ref NP_001094800.1 C1GALT1-specific chaperone 1-like [Homo sapiens]
letterCounter is 7
>gi 117938299 ref NP_001071105.1 RAB6C-like [Homo sapiens]
letterCounter is 109

Sample of desired output:

>gi 117938299 ref NP_001071105.1 RAB6C-like [Homo sapiens]
letterCounter is 109

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Nov 24, 2014

I am trying to draw a binary node tree to a text file.

public class BinaryTreeExample {
public static void main(String[] args) {
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} static class Node {
Node left;
Node right;
int value;
public Node(int value) {

[Code] .....

This will output:

Building tree with rootvalue25
=================================
Inserted 11 to left of node 25
Inserted 15to right of node 11
Inserted 16to right of node 15
Inserted 23to right of node 16
Inserted 79to right of node 25
Traversing tree in order
=================================
Traversed 11
Traversed 15
Traversed 16
Traversed 23
Traversed 25
Traversed 79

I need to print this information in the form of a graphic to a text file. so for example:

OUTPUT IN TEXT FILE
25
/
11 79
etc...

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Aug 26, 2014

I have a properties file with key values in it, now when I use my search box to search for a key in the properties file to check whether or not it is there - I can't get it to check and return the key value if it is theere. I've tried a few methods but keep getting a null pointer exception when it hits line 15 in the code all the time so I'm stumped at the minute.

My text field is called textFieldSearch

This is my button code

JButton btnSearch = new JButton("Search");
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//search button
//find selected comman
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[Code] ....

This is my method code

public void FindSelectedKey()
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Sep 1, 2014

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// Method to search the tree for a specific name and
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public T search(BTNode<T> btNode) {

[Code]....

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Nov 25, 2014

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Java Code:
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

[code]...

My input text file will be in the following format, each row is 1 tree, each empty line between the rows means a new tree.Java Code:

80 45 14 1 2 3 4 51

2 4 7 8 9 6 3 4

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May 21, 2014

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import java.io.*;
import java.util.*;
import java.text.*;
public class mySearch
{
private final static int path = 0;
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[Code] .....

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Nov 17, 2014

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import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.Writer;
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[Code] .....

I put some comments in the read method so you can get exactly what im trying to accomplish....

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Oct 19, 2014

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[Code] ....

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Here's the output if I remove the comment from the System.out...:

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String @ that Line# 2: package banking;
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Apr 30, 2014

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Scanner output = new Scanner("Match.text");
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[code]...

Error :NoSuchElementException

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Ask the user if the want to add any customers to this text file (got it!)

Add those customer's name's, addresses, postal codes and cities. (got that too)

Verify the postal code is in the proper format (yep!)

Add the new information to the text file, and display it to the user (Nope...)

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static String firstOutput, name, address, city, postalCode, file = "";
static int customer = 0;
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[Code] .....

The errors I get are:

Java.io.exception. Main. Stream closed
ensureOpen (115)
ava.io.BufferedReader.readLine(BufferedReader.java:310)

I understand that the numbers correspond to lines of code (line 115, or 310, for example) but I am unsure of how to fix these errors.

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Java Code:

import java.io.BufferedWriter;
import java.io.FileWriter;
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[code]....

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I've considered using an input stream, but most tutorials on reading from a file involve creating a file object such as

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I've used code such as

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