program to accept string
import java.util.Scanner;
public class accept_string{
public static void main(String[] args)
[code]...
I wrote this program.actually I copy it from webpage this website.Its very cool to wrote programs in java.but I did not understand meaning of string,scanner......
what is meaning of Open Source in programming lenguages?
I want to ask this question reagrding this context that if some company or some products that says "This is open source" all codes are available Then it it mean..
1)We can reuse,re produce,distribute this code,modify and sell it for commercial purpose?
I know there is license also attach with a OpenSource.
But What exactly meaning of OpenSource?
this is my code :
String name = "Mohan";
String is a immutable class and where these character stored when we assign some character. How the logics are working inside the String class.
I saw code like this.
Set<String> set = new HashSet<String>(){{ add("Hello"); }};
I can understand that it is a HashSet with one element "Hello" in it. I don't understand this syntax. Why there are double curly braces?
I must be missing a bracket or an import somewhere in this small bit of code. What is wrong and why all my swing KeyWords are all getting errors.
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
public class list1 extend JFrame
{
private JPanel deckPanel;
private JPanel selectedDeckPanel;
private JPanel deckList;
[Code] .....
Keywords are the predefined definition known to compiler like public/static/void/class
And literals are String/init/double/char/ , so here for e.g. String , its also predefined class ..
So will it be right to say that literals are also keywords?
Which package or class i can find all the predefined keywords in java like "this" etc...
actually i want to know if this operator is itself final in nature or not from its syntax?
Is there any way to add duplicate keywords (for all java keywords) maybe in a different language such that we can program java in a different language.
View Replies View RelatedI have written the code to read the line from file and save first string as word and and remaining string as meaning..
E.g.: innovation a new method, idea, product, etc.
word = innovation
meaning = a new method, idea, product, etc.
In my code there is no error and have a mistake what it is means first assigning word is ok and while saving meaning ..it saves like
{
a a new a new method } like that
Java Code:
import java.io.BufferedReader;
import java.io.FileReader;
public class Dil{
public static void main(String[] arg)throws Exception
{
BufferedReader in;
[Code] ......
I am wondering if there is a way in jave to use enums WITHIN a class (without creating a separate enum class) without using private static final. Something like as folows:
class My Class {
myEnum {ACTIVE, INACTIVE, PENDING};
}
is there something like this available?
i want create little program which enter the number, ant program says triangle exist or not. So code :
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
[code]...
So when i put first num like 1, next num like 2 and next num like 100 , program says Triangle exist.
Have written a program to open Excel sheet from java program.Below line works fine.
Process p = Runtime.getRuntime().exec(new String[]{""C:Program Files (x86)Microsoft OfficeOffice12Excel.EXE"","C:UsersRASHPA~ 1.ORAAppDataLocalTempExport_xl420314062726 9379706.xls"});
But below code gives error i.e. Executable name has embedded quote, split the arguments
String path = "C:Program Files (x86)Microsoft OfficeOffice12Excel.EXE";
String file = "C:UsersRASHPA~1.ORAAppDataLocalTempEx port_xl4203140627269379706.xls";
Process p = Runtime.getRuntime().exec(new String[]{"""+path+""" + ","+file});
I am using java 1.6.
In a project for school. I have a program that links several GUI's as a menu based program. What I am trying to accomplish is when one of the previous GUI's is closed that it doesn't terminate the entire program. There is a lot of classes in the entire project so I'd prefer not to paste all the code here, but if it is necessary I will do so.
View Replies View RelatedI'm creating a program that will compile and run another java program:Lets say I have a program in directory
D:HelloWorldsrc
and compiled program will be in
D:HelloWorldin
inside src and bin is a folder hello (that's a package)
package hello;
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World");
System.out.println("Hello World");
}
}
This program will be run by another program (that's the program that I am creating).Here is the code of my program:
package runnercompiler;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
public final class RunnerCompiler {
[code]....
I'm working in a GUI program, but I'm not going to put the code because there is a lot of code and files. Instead, I will try to put it an example.
Let say:
I'm working in a GUI program that ask form the user to enter two number's. When the user press at the calculate button. It will show up the output. However, the program won't exit unless the user press at red (X).
int x = user_Input1;
int y = user_Input2;
int total = x + y; //
JOptionPane.showMessageDialog(null, total);
I know that there will be a (total) now, so my question is here how can I reset all the calculation and have a new total that will show up when the user enter two number's again.
I have searched the internet for about 2 days and now i'm posting this. I'm trying to make a program that will let me enter "1" to show how many movies I have watched and press "2" for a new one. The problem I ran into is I enter 2 then when I enter 1 it said "you have watched 0 movies". I know what the problem is I just don't know how to retype it. here is the code.
package stuff;
import java.util.*;
public class thing {
[Code].....
I just finished a tutorial on youtube that covers the basic java, and now i want to try and make a game / program thing, only problem is that i have never worked with graphics before (i have tried to make ovals, rectangles, and other things with the paint method tho )
I know how to make a jframe and a jpanel, and i feel like i can make a simple "game" (not a complicated one, just a simple one with a guy walking around on the screen) in fact i have already make a such game, where you are a oval walking around on the screen, so thats not really my problem.
My problem is that i want to draw an image on the screen that can walk around instead of the oval, but how to do that. I have made a new project and set up the jframe and jpanel, and my code looks like this:
(main)
import javax.swing.JFrame;
public class main_class {
public static void main(String[] args){
JFrame f = new JFrame();
f.setTitle("title");
f.setVisible(true);
f.setSize(800,600);
[code]...
but once again, i get a blank jframe with no image and no "test" string . How i can display images on the screen?
I have done a rock, paper, scissors program, but it only executes once. How do I make the program repeat so you can play multiple times?
import java.util.Scanner;
import java.util.Random;
public class RockPaperScissors {
public static void main(String[] args) {
int A;
Scanner input = new Scanner(System.in);
Random random = new Random();
[code]....
I am new on this and I will be working in a gpa and average program. This is my code so far: Every time that I try to add the gpa part it gives me errors or just duplicates whatever I've in average and displays it in gpa
/**
* This program shows a database of students in a school.
* It gathers information as name, classes, grades, and calculates average and gpa average.
*
*/
import javax.swing.JOptionPane;
[code]....
In this exercise you will write a program that estimates the value of π. Pretend that we are looking at a dartboard in the picture above. If the square is 2units wide and 2 units high, the radius of the circle within the square is 1 unit. Then the area of the circle is π*r2 = π*12 = π. The area of the square will be 2*2 = 4.
The estimation of π will work by randomly "throwing darts" at the dartboard. We will assume that every dart will hit the board but the location of that strike will be random so some darts will land inside the circle and some will land outside the circle. The calculation of π is then the ratio of the number of darts that land inside the circle to the total number of darts, multiplied by 4. Note that as we increase the number of darts used in the simulation, the accuracy improves.
Follow the steps to complete the program:
1.Declare variables that represent x, y coordinates of a dart, the distance of the dart from the origin, the number of darts that land inside the circle, and the total number of darts.
2.Read in the total number of darts (N) from the user and create an instance of the Random class.
3.Create a loop that runs N times. Inside the loop, you will use the nextFloat() method of the Random class to create x, y coordinates randomly, and then compute the distance of the dart from the origin. Determine whether the dart lands inside or outside of the circle.
4.Compute π using the estimation algorithm.
5.Run the program with increasing numbers from 100 to 100,000,000 and observe the accuracy of π.
So the question asks us to use a sentinel value to end a program, but the sentinel value is 999, but the while loop only recognises strings...
static Scanner console = new Scanner (System.in);
public static void main (String[] args)
throws FileNotFoundException
{
PrintWriter outfFile = new PrintWriter ("Invoice.txt") ;
String firstItem;
String item ;
int price;
[Code] .....
A file has the data of the subjects and name of professors. The file contains line for each subject. The line starts with professor Name followed by the Subject name.
Harry Williams Advanced DBMS
James H Computer Networks
Sasha Ben Artificial Intelligence
Harry Williams Software Engineering
Palbo Kastro Formal Languages
Alex W Advanced SE
James H Operating System
Harry Williams Theoretical Foundation
Write a program with setter getter method to read the file, and then write a class to store several professors in a hashset (Single Key and Multiple Values).The program should be able to display all the professors in the set and allow the user to search for a professor.
Input:
Professor Name: James H.
Then the Output will be:
Subjects Taken by the professor: Computer Networks, Operating System.Display No Classes available if the professor name does not exists .
This program will compile. Yet once i run it it immediately terminates itself....
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
public class myImageIcon extends JFrame{
[Code] .....
The objective of the program: Write a method that takes a string as input and returns the letters contained in that string in sorted order as output. For example, an input of "Computer Science" would print the following as output (case is ignored): ccceeeimnoprstuthe code works otherwise
import java.util.Scanner;
public class weeklyProblem4 {
public static void main(String[] args) {
Scanner console = new Scanner (System.in);
System.out.println("This program takes a string as input and returns the letters contained in that string in sorted order as output");
System.out.println();
System.out.println("Enter some string");
String userstring = console.nextLine();
sortedString(userstring);
[code]....
how to put search bar in my program.i am just new to java programming so i dont really master all the codes.i dont have much time
import java.io.*;
import java.util.Scanner;
public class myjavProject{
public static void main(String[] args)throws IOException{
PrintWriter output = null;
String ID;
String firstname;
String lastname;
String ans = "y";
String userinput;
[code]....
I am new to programming and this is my first assignment. A sample of the final output is:
-"How many digits would you like to compute Pi to?" 2
-"It took 200 terms to approximate Pi as 3.136592684838816"
What I have so far, ask the user for input then stops!
import java.util.Scanner;
public class PiApproximation
{
public static void main(String[] args)
[code]...