Top Three Strings In Array

May 18, 2015

I need my code to print out the top three most common IP Addresses in the ArrayList. Right now I have it printing out the top IP Address. I am a little confused as to how to get it to print out three. Every time I change something, It doesn't give me the correct results

My Code:
public class Log_File_Analysis {
private static ArrayList<String> ipAddress = new ArrayList<>();
private static String temp , mostCommon;
static int max = 0;
static int num = 0;

[Code] .....

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How To Find Whether Strings Contained In Array Of Strings Constitute A Similar Character Or Not

Aug 25, 2014

I am having an array of strings and i want to find out whether these strings contained in the array contain a similar character or not.For example i am having following strings in the array of string:

aadafbd
dsfgdfbvc
sdfgyub
fhjgbjhjd

my program should provide following result: 3 because i have 3 characters which are similar in all the strings of the array(f,b,d).

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How To Get Average Of Strings Using Array

Apr 21, 2014

I'm trying to calculate the average of grades that a user puts in. Here is my code so far:

public static void main(String[] args) {
Scanner input = new Scanner (System.in); 
System.out.println("Please enter an array of grades seperated bt a comma.");
input.nextLine();
String arrayOfGrades = "100,50,100";
String[] grades = arrayOfGrades.split(",");
 
[Code] .....

I think I'm on the right track, the only big error I'm really getting is the line: sum += grades[i]. It's saying string can not be converted into a double.

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Sorting Array Of Objects With Strings?

Feb 14, 2015

An array has objects with String firstName, String lastName, int ID, char examType('M' or 'F'), and int score. Every object has both Midterm('M') and Final('F'). The array has to be sorted by the first Midterm- 'M' and immediately followed by the Final ('F') of the same person (object). Im having troubles with coming up with a proper algorithm with gettin the Final- 'F' after Midterm for the same person.

Java Code: public static Exam[] collateExams(Exam[] exams) {
Exam [] r = new Exam[10];
r = exams;
int[] position = new int[10];
int index = 0;
for(int i = 0; i < exams.length; i++)

[Code]...

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Sorting Array Of Strings From User Input

Apr 3, 2015

I am working on an assignment where I initially have to take as input a number. That number will be the number of strings the user is going to type. As they are typed, they are to be sorted alphabetically, then printed. It took me a while to get this far, and I am stuck on how to properly invoke the other methods in main. There has to be at least three methods: main, one to do the sorting, and one to print the new array. I'm quite sure there are mistakes in my code, but this is definitely a challenge for me. Here is the code. Keep in mind that the methods being invoked are blank on purpose.

I am not allowed to use the Arrays, Arraylist or Collection class. This is basically to test my ingenuity and to see how arrays actually work.

import java.util.*;
public class Sort_as_Inserted {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter number of elements to be sorted: ");
String element_number = input.nextLine();

[Code] ....

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Adding Strings To Array And Writing To File

Apr 10, 2015

Every time i try and add a new word to personalDictionary, it only replaces the first index. In my personalAdd method i had tried to add a running count to advance the position it would be saving in but it doesn't seem to be working correctly...

Java Code:

import java.util.Arrays;
import java.util.Scanner;
import java.io.File;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
public class SpellingChecker

[Code] ....

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How To Concat Multiple Strings To A String Array

Dec 28, 2014

I am trying to update a Rubik's cubes side by adding each of the 9 squares of the Rubik's cube's side.

So for example:

cube.front.squares = cube.fronts.squares[1] + cube.front.square[2] + cube.left.sqaures[8] ... //until 9 sqaures are added, where squares is a String array of size 9. However, when I try doing this I get an error stating "change 'square' to 'String'". I know I can go in an individually change the values like:

cube.front.squares[0] = "whatever"
cube.front.squares[1] = "something else"

but I know there is a better way to do this...

I also just tried to use String[] concat= ArrayUtils.addAll(first, second) but that only takes in two arrays at most according to the API: [URL]...

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How To Access 4 Strings Randomly From String Array

Jun 13, 2014

Now I am trying to print the 4 string randomly from string array..where string contains no of words which are splitted from the file....

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Return Array Containing All Strings That Start With Letter A

May 13, 2014

Write a method that accepts an array of Strings.  The method must return an array containing all strings that start with the letter 'A'.  

There must be no 'null' values in the resulting array.  The resulting array may be of size zero.

I don't think I am returning ALL the strings that start with A, just the last one of the for loop. Does this look somewhat correct?

public String[] startsWithA(String[] strings) {
String startsWithA = strings[0];
for(int i = 0; i < strings.length; i++) {
if(strings[i].charAt(0) == 'A') {
startsWithA = strings[i];
}
return startsWithA;
}
}

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Split String And Storing It In Array Of Strings

May 10, 2014

String str = "#11* 1# 2*12# 3"

required o/p in array as

#11

* 1

# 2

*12

# 3

i.e splitting the strings for every 3rd string and storing it in an array of strings ...

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Strings Representing Poker Hand - Splitting Up Array

Jun 9, 2014

The file has a 1000 strings that look like this.

6S 8D KS 2D TH TD 9H JD TS 3S
KH JS 4H 5D 9D TC TD QC JD TS
QS QD AC AD 4C 6S 2D AS 3H KC
4C 7C 3C TD QS 9C KC AS 8D AD
KC 7H QC 6D 8H 6S 5S AH 7S 8C
3S AD 9H JC 6D JD AS KH 6S JH
AD 3D TS KS 7H JH 2D JS QD AC
9C JD 7C 6D TC 6H 6C JC 3D 3S
QC KC 3S JC KD 2C 8D AH QS TS
AS KD 3D JD 8H 7C 8C 5C QD 6C

Each represents a poker hand. The issue is each line has player one and player two. I am trying to split them up so I can figure out who won.

package pokerHandCalculator;
import java.io.*;
import java.util.ArrayList;
public class PokerCalculator {
ArrayList<String>pokerHands = new ArrayList<String>();
void readFile()

[Code] ....

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Console Calculator Program - How To Split Array Of Strings

Apr 22, 2015

I'm writing a command line application of a calculator in Java. I need to be able to (as per program requirements) split the array of strings (6+3) into an array of strings? How would that be done? I know you can use the split method, but I am not really sure how that wold work to perform math with them?

On a side note: for this application, how could you make the program accept a variety of different lengths of strings to perform math with them?

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Encrypt Strings Present In Array To Alphabet After 2 Positions

Mar 13, 2014

I have to encrypt the strings present in an array to the alphabet after 2 positions

Example:

my name is x

should give an output

oa pcog ku z

Although i have taken an input but unable to increment the char in the array...

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Create Dynamic String Array If Don't Know Number Of Strings In The Beginning?

Feb 21, 2014

how to create dynamic string array if we dont know number of strings in the beginning?

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String Split Method - Return Array Of Strings Consisting Of Substrings Splitted By Delimiters

Sep 28, 2014

I am having a problem with the following code. It compiles and runs fine however my output is wrong.

public class SplitString {
public static void main(String[] args) {
String[] string1 = split("ab#12#453", "#");
String[] string2 = split("a?b?gf#e", "[?#]");
for (int i = 0; i < string1.length; i++) {
System.out.print(string1[i] + ",");

[code]....

The split method in the String class returns an array of strings consisting of the substrings split by the delimiters. However, the delimiters are not returned. Implement the following new method that returns an array of strings consisting of the substrings split by the matching delimiters, including the matching delimiters.public static String[] split(String s, String regex)For example, split("ab#12#453", "#") returns ab, #, 12, #, 453 in an array of String, and split("a?b?gf#e", "[?#]") returns a, b, ?, b, gf, #, and e in an array of String.

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Public Method That Takes Array Of Type Object To Load Strings Into Linked List

Oct 13, 2014

I am having a little trouble with a part of my Java assignment that needs to have linked lists in it.

I need to write a public method that takes an array of type object to load strings into a linked list.

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Sorting Lowercase Strings Before Uppercase Strings

Mar 26, 2014

I can sort strings in a collection by uppercase and then lowercase though I was wondering if there is any way of doing it in reverse, sorting by lowercase then by uppercase.

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How To Convert Input Array Of Type Strings To Class Type

Aug 14, 2014

class Passenger{
String name;
int age;
char gender;
int weight;
public Passenger(){

[Code] ....

This is showing error.....error it gives isthat it cannot change from string type to passenger type......... How to do it??????

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How To Compare Strings

Mar 13, 2014

Its supposed to notify the user if they have a palindrome, but keeps returning true even when I type, "hello".

import java.util.Scanner;
public class PalinDrome {
public static void main(String[] args) {
String line;
Scanner input = new Scanner(System.in);
System.out.print("Please enter a word ");

[code]....

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Reading Only First Name From Strings?

Feb 12, 2014

I know that in c++ in order to read a string like

PHP Code:

. you need to use

getline(cin,string variable)

. In java, I have noticed that using

String name=keyboard.nextLine()

automatically reads the whole line...Suppose I wanted to read the first name only, how would I be able to accomplish that?

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Extracting The Strings?

Jul 3, 2014

example input (#federer #great #game )->
output : [federer] [great][game], [federer, game],[federer,great], [game,great], [federer, game,great]

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Pass By Value And Strings

Jul 19, 2014

Below is the snippet of code

public static void main(String[] args) throws Exception {
String s = "oldString";
reverse(s);
System.out.println(s); // oldString
}
public static void modifyString(String s) {
s = "newString";
System.out.println(s); // newString
}

I thought the first print statement would print "newString" as String is an object, and when we pass objects between methods, changing state of the object in any method reflects across the methods.

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How To Use NextLine For Strings

May 12, 2015

I am asking the user a question and already have a correct answer. The answer is a string but is more than one word.

When the user types in the correct answer, it still comes up as wrong but I only have the input.next method.

Quote
Why are rabbits ears long?
United states of america
Incorrect!

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While Loops And Strings

Jan 3, 2014

So the while loop I am trying to use is:
while( type != "EXIT" ) {
type = input.next();
}

The problem is that typing in EXIT doesn't end the loop like I want it to. I also tried input.nextLine(); but neither of them work. The loop is being used to fill an ArrayList so the number of elements can change based on how many they want. What am I doing wrong, or what alternatives do I have?

Seems I need to use !type.equals("EXIT")

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Java Won't Allow To Use Strings

Sep 21, 2014

covers switch statements and if/else statements. Java doesn't like the Strings for some reason. My instructor does her strings just like this and it works for her. I can figure out the rest of the program if I can only get around the: "java error35: sSymbol variable might not have been initialized.

import java.util.*;
public class RockPaperScissors
{
public static void main(String[] args) {
//generate outcome
int symbol = (int)(Math.random() * 4);
String sSymbol;

[code]....

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Operation With Strings

May 6, 2014

I have to write a java programm,where i have given string. Output should be like that:

1. print only once what characters are apearinng in string, and the last index of it

2. print how many characters are in the string

I have to do it only with loops,no special classes

So far:

public static void main( String[] args ) {
String besedilo = "Testiranje";
besedilo = besedilo.toLowerCase();
for (int i=0; i<besedilo.length();i++)

[code]...

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