Checking Two Strings In Java?
Feb 10, 2014
I want get a specific document from data set if a given string matches in that document.
If given string is 'what is java' and,
doc1='... what is full form of java ...'
doc2='... is java what ...'
doc3='... what is java ...'
then the output should contains doc1, and doc3.
I'm trying like this.
for(String key_word: key.split("W+")) {
for (String _word : line1.split("W+")) {
if(word.toLowerCase().equals(key_word.toLowerCase())) {
key_final=key_final+" "+key_word;
}
}
}
I'm getting wrong output containing doc1, doc2 and doc3.But I want only the exact match. Here each document is containing some paragraphs.
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Dec 7, 2014
I am trying to do is get a user to input their name into the system. Once the user has inputted the name into the system, the system should check to see if the name entered matches "alice". If this is true then the system should print "welcome to the system alice". If it is not alice it should not do anything.
Here is the code I have so far... The fault/ error seems to be with the sInput string in the IF statement.
import java.io.*;
public class Hellohuman
{
public static void main (String[] args) {
try {
InputStreamReader isr = new InputStreamReader(System.in);
[Code] ....
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Mar 20, 2014
How can I check the existence of a parameter in Java and if it doesn't exists, I want to assign a default value?
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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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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
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String sSymbol;
[code]....
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Sep 21, 2014
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Jan 13, 2015
It works when i do this ,
String a = "*";
for(int i = 0; i++; i<10){
System.out.println(a);
a = a +"*";
}
but it doesn't work the other way,
String a = "***************";
for(int i = 0; i++; i<10){
System.out.println(a);
a = a - "*";
}
I searched about this online and read strings are unmutable in java but what does that exactly mean ? If the string cannot be changed how i am able to add the characters but not remove them.
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Jul 4, 2014
Am i doing this right?
public class TwoStrings
{
public static String duplicate (String s) {
String t = s + s;
return t;
[Code] ....
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Feb 13, 2015
I am testing some stuff here is my code:
public static void main(String[] args) {
String[] a = new String[5];
//String input = JOptionPane.showInputDialog(null, "enter input");
Scanner scanner = new Scanner(System.in);
[Code] ....
I am trying to type in 5 strings from java console and print them all out. I am using a "/" as a delimiter. My problem is that it does not print any output after I type strings separated by "/" like this: hello/gea/cae/eaf/aer and press enter. It works if I use JOptionPane but from the console its not working. I want to use the console instead of JOptionPane for this one.
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Apr 23, 2015
I am advised to use a while loop the Scanner method hasNextLine() and in the while loop body, call the Scanner method nextLine(), and add the returned String to the ArrayList of Strings. what I have gotten so far:
Scanner input = new Scanner(new File(""));
while(input.hasNextLine()) {
String line = input.nextLine();
System.out.println(line);
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Apr 30, 2014
I'm trying to find the int with the lowest value, and I only know how to set it up like this:
Let's say x1 is the lowest.
int x1, x2, x3, x4;
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Is there a way to shorten this at all? (It's alright if there isn't, just looking for shortcuts)
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Oct 25, 2014
//checks wether an int is prime or not
public static void main(String[] args) {
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if (!(n==2)) {
for (int i = 2; i * i <= n; i++) {
if (n % i == 0);
[Code] .....
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Apr 15, 2015
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Jan 12, 2015
I just can't find a way to check if user puts any input or not? The line is Employee Name and I need to validate that he puts something there.
import java.util.Scanner;
public class JavaMartInventorySystem {
public static void main(String[] args) {
String empName;
Scanner keyboard = new Scanner(System.in);
[Code] ....
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Nov 21, 2014
I have a programming assignment in which I have to make a program which loads a crossword from a Properties file and then, when the user press a button, the program checks if the letters the user has typed in the interface are the same as in the correct matrix. If all the letters from a word are correct, the program must paint every letter of the word green.
I'm using two matrix, one that is called "mundo" (I 'm from Latin America) , which has the correct letter for each box. The other one is a JtextField matrix which ='ve created using a Gridllayout. I called this one crucigrama (crossword in Spanish)
This is the code I wrote to validate: So you can understand, here is a translation:
numero = number
fila = row
column = columna
bien - a boolean I used to check if the letter I've checked before are the same as the correct ones
.darLetra() - returns a string with the correct letter
[Code] .....
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Sep 28, 2014
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Feb 10, 2015
I'm trying to write code for a program that checks numbers upto a number that the user gives. I've looked around, and the nearest matches I can see are people using for loops with predetermined amounts of looping.The only real tools I'm allowed to use are basic arithmetic, and while loops. The program is supposed to have 2 nested while loops.
import java.util.Scanner;
import java.io.*;
public class questionTwo234234 {
public static void main(String[] args){
[code]...
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Jan 18, 2014
I have the following code to check for five characters palindrome but it always give me incorrect answer that if i have a word like radar the answer it isn't a palindrome. and if i changed any thing in the code i got either stack overflow or index out of bounds exception
The code is as the following
import java.util.Scanner;
public class Palindrome {
int first =0;
static int n;
int last = 4;
int y = 0;
public static void main(String [] args)
[Code] .....
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Aug 5, 2014
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In simple words how to continuously check for upcoming alarms and popup any time any alarm comes up during my app is running
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Jun 27, 2014
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The ArrayList is in a class called system. I dont know if i should try to Override the equal or try something else.
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Jun 5, 2012
Prompt user to enter a social security number in the format DDD-DD-DDDD, where D is a digit. Displays "Valid SSN" for a correct ssn, and "Invalid SSN" otherwise.I have it working I am just looking for other ways to solve this with an array maybe or something simpler. I have used if statements here:
public static boolean checkSSN(String social) {
boolean valid = false;
// 9 digits and 2 hyphens. First three characters, 5 and 6, and 8, 9,
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[code]...
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Feb 16, 2014
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Here is the sample input file given:
account_number start_time_of_call duration
10011A 21:50 20.2
10011A 13:23 12.3
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import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
public class spInputOutput {
[Code] .....
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Oct 1, 2014
I want a progress bar when checking the sha1 . When getting the sha1 there we see the progress of checking
here is the code
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package program1;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.security.MessageDigest;
import java.util.HashSet;
[Code] ....
This is the output
Exception in thread "Thread-2" java.lang.NullPointerException
at program1.ProgressBar$thread1.run(ProgressBar.java:98)
at java.lang.Thread.run(Thread.java:744)
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Jan 29, 2014
How can i check the reference that is not duplicate and date format is DDDCCYYnnnnnnn, CC must be 20 and YY must not be less than the current year, nnnnnnn is the sequetial number of the file and to complete the 7 numeric characters, zero's must be populated in front of the number. DDD must be a valid reporting entity code. there must not be a duplicate. Code I try
private boolean test-date()
{
String s_Ref = this.transactionFile.getsReference();
boolean flag = true;
if(!isValidPattern(s_Ref, "[0-9]{14}"))
[Code] ....
The reference number is like 201401030234509
If there is duplicate show error code 105
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Jan 31, 2014
I have a regular expression that I created and tested on some regex site, [URL] .... It worked on the test site but I can't get it to work in Java.
The code is:
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assertTrue("Didn't Match", s.matches("_CAL[0-9]+$"));
This test always fails. I cannot figure out what is wrong with it. In fact, I can't get any match no matter what regex I use.
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