Three Ways To Print Dash Character
Feb 14, 2014
Find three ways to make the program below print 20 copies of the dash character '-' by changing /adding just one character.
int i,n=20;
for(i=0;i<n;i--){
System.out.println("-");
}
I found two solutions but till now not able to find the third one. The two solutions are
int i,n=20;
for(i=0;i<n;n--){
System.out.println("-");
}
and,
int i,n=20;
for(i=0;-i<n;i--){
System.out.println("-");
}
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Feb 20, 2015
How to i print out the first 6 character of a last name even if the last name is and X like Malcolm X or Sung Li. X and Li being the last names
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Oct 26, 2011
I'm trying to write a method that will print a string of a random number of X's (from 5 to 20) on a line, then another number of X's on the next line, etc. until the random number = 16.
I have to use while loops and probably fencepost algorithms. I'm confused with how to print the number of x's the random number of times over and over.
Right now, I'm pretty sure my for loop is wrong or unnecessary.
So far, this is my code:
public static void randomX() {
int x = 0;
while (x != 16) {
x = (int)(Math.random()*20) + 5;
for (int i = 0; i <= x; i++);
{
System.out.print("x");
}
}
}
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Jul 14, 2014
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Jan 14, 2014
How can i make a method that makes sure that a String only contains digits and "-" (dash) ... (I want to make sure that the method can see if the user has written in an okay telephone number...)
This is what I've done this far.. But the method retuns false if you type - or +
static public boolean telephoneValidation(JTextField tf) {
boolean svar;
try {
Integer.parseInt(tf.getText());
svar = true;
}
catch(NumberFormatException fel)
[code]...
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Nov 14, 2014
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Feb 2, 2015
i want to have a JLabel that could "robotically" type words character by character.
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Nov 21, 2013
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Code:
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----------------
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Mar 3, 2015
What I am trying is find the XOR value between charcters of a String here is my code
public static void main(String[] args) {
System.out.println(grayCode("100"));
}
public static String grayCode(String input){
StringBuilder temp=new StringBuilder();
temp.append(input.charAt(0));
for(int j=1;j<input.length();j++){
char previous=input.charAt(j-1);
char current=input.charAt(j);
char xorVal=(char)(previous^current);
temp.append(xorVal);
}
return temp.toString();
}
but I am not getting actual XOR value of two charcters that I am trying to get.
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Apr 7, 2014
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import java.awt.event.*;
import javax.swing.*;
public class SwingSorts extends JFrame implements ActionListener
{
JRadioButton bubble;
JRadioButton selection;
[Code] .....
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ab
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Feb 28, 2015
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class InputUser
{
public static void main(String arg[])
throws java.io.IOException
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char ch;
ch=(char) System.in.read();
System.out.println(ch);
}
}
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Apr 12, 2014
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company class:
import java.util.ArrayList;
import javax.swing.JOptionPane;
public class Company {
private ArrayList<Employees> list ;
private static int numberOfCompanies;
[Code] ....
error message when print button is clicked:
Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: JOptionPane: parentComponent does not have a valid parent
at javax.swing.JOptionPane.createInternalFrame(Unknown Source)
at javax.swing.JOptionPane.showInternalOptionDialog(Unknown Source)
at javax.swing.JOptionPane.showInternalMessageDialog(Unknown Source)
[Code] ......
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package tiled;
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[code]....
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Mar 14, 2014
import java.io.*;
public class Q2{
public static void main (String[] args) throws IOException,
ClassNotFoundException
[code]....
For this program, i successfully did create an output.txt, but i have some weird characters in front of "hello" when i open it in notepad or wordpad.
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How To Take 1 Milion's Of Character As A Input
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I am trying to remove a character from string as below
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//str.charAt(n)
char o=str.charAt(n);
return str.replace("o","");
//a.replace("o","");
}
return null;
}'
what is the best way to remove it.
If i call like
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When there are more than one way to do a challenge in java which one to choose as best way.
What is the criteria to decide one particular way of writing code is best among say 'n' different number of ways.
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Mar 7, 2014
String charAt() method returns a particular Character at the specified index in the String.
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I am trying to swap given string first and last character. If I pass world i should get 'dorlw'
I found link and code [URL]....
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char[] charArray=str.toCharArray();
int indexOfLastChar=charArray.length-1;
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char temp=chatArray[i];
charArray[1]=charArray[indexOfLastChar-i];
charArray[indexOfLastChar-i]=temp;
}
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I wonder Is there is any easy simple way to do it.
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