How To Find If JVM Is 32 Or 64 Bit From Java Program
Jun 26, 2014How to find if JVM is 32 or 64 bit from Java program....
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How To Find Out Minimum JRE Requirement For Java Program
Jan 26, 2014I finished a game in Java and sent it to a friend. Launching the program in my computer worked just fine.
But he got this error : "Could not find the main classs: Main. program will exit"
My JRE version is the most updated one. His JRE was version 1.6. He updated his JRE, and the problem was solved.
This is a bit worrying for me, because as far as I know, 1.6 isn't a very old version of the JRE. It's not the most recent one, but not that old.
This is worrying because I'm planning on sending my game to a lot of friends, and trying to distribute it on the internet.
A lot of people don't have the most updated JRE. And they are mostly non-programmers, so I can't expect them to update to the newest version of Java upon downloading my game. They might not know what Java is, even though they got it on their computer, and upon receiving an error, they'll just give up on the game.
If my game wouldn't work with a significantly old JRE, that would be reasonable. It's part of the nature of working with Java. But the fact that a relatively updated JRE, 1.6, doesn't work with my game, is worrying.
*(Please note: My game isn't implementing anything "special". Swing and KeyBindings are the 'newest' additions to Java that I can think of inside my game)*.
In short, I'd like to know that my game works on most of the computers it tries to run on. Knowing that it doesn't work on a relatively new JRE, is worrying.
So I have two questions:
1. Is it normal, for a Java program, to have such "high" demands for the JRE version? Do a lot of Java games demand at least version 1.6 of the JRE? Is this common?
2. How can I find out the minimum JRE version requirement for my program? Is there a methodical way to do this, or do I just have to go through all the libraries I use in my game and figure out what's the JRE release version for each one?
Java Program - Find Next Highest Or Lowest Prime Number
May 2, 2014Java program takes positive int from user and determine if prime. Next the program finds next highest or next lowest prime number.
import java.io.*;
import java.util.*;
public class pa2take2 {
public static void main (String[]args){
int menus; //menu selection
[Code] ......
Java Program To Find Index Of Greater Element Whose Value Is Sum Of Remaining Elements
Aug 25, 2014I need to write a java program to find the index of the element whose value is the sum of the remaining elements. Recently I have been asked this question in an Interview which I couldnt solve properly.
View Replies View RelatedAlgebra - Perfect Square Java Program / Find Smaller Integer N
Sep 22, 2014Write a program that prompts the user to enter an integer m and find the smallest integer n such that m * n is a perfect square. (Hint: Store all smallest factors of m into an array list. n is the product of the factors that appear an odd number of times in the array list. For example, consider m = 90, store the factors 2, 3, 3, 5 in an array list. 2 and 5 appear an odd number of time in the array list. So, n is 10.)
so far my program is just like this.
import java.lang.Math;
import java.util.Scanner;
public class PerfectSquare {
public static void main(String[] args) {
Scanner m = new Scanner(System.in);
int Fint;
[Code] .....
how do i make the program find the smallest integer n?
Program To Find Repeated Words
Feb 5, 2014I have made a program which finds the number of occurrence of the words. It is as follows :
public class B {
public static void main(String[] args) {
Map<String, Integer> mp = new LinkedHashMap<String, Integer>();
String s = "This is me tarun ohri This";
Scanner p = new Scanner(s);
int i = 0;
[Code] .....
Output is coming {This=0, is=1, me=1, tarun=1, ohri=1}
Write A Program That Find The Sum Of Two Numbers 62 And 99?
Jan 23, 2015I have to write a program that find the sum of two numbers 62 and 99 and stores them in a variable named total. However, I have one error that I just can't get rid of and can't tell what it is. I'm using jGrasp and here's what it says:
Programming Challenge #5.java:14: error: class SumofTwoNumbs is public, should be declared in a file named SumofTwoNumbs.java
public class SumofTwoNumbs {
^
1 error
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
and here: is my code:
import java.util.Scanner;
/*
* 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.
*/
/**
// This program has variable of several of the integer types.
public class SumofTwoNumbs {
public static void main(String[] args) {
[code]....
Program To Find Adjacent Value For -1 - No Output
Apr 25, 2015I wrote a program that find adjacent value for -1 .ex:
input
1
3 3
1 2 2
1 1 -1
5 5 0
output
1
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 javaapplication1;
import java.util.Scanner;
[Code] ....
Program To Find Miles Per Gallon
Jan 23, 2015I have to write a program the calculates the MPG and display's the result on the screen. However, I have three errors I just can't seem to figure out. jGrasp points to the following error, but doesn't tell me what it is:
Programming Challenge #9.java:34: error: cannot find symbol
gallons = keyboard.nextInt();
^
symbol: variable keyboard
location: class MPG
3 errors
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
My code is as follows:
import java.util.Scanner;
/*
* 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.
*/
// This program has variable of several of the integer types.
public class MPG {
public static void main(String[] args) {
[Code] ....
Program To Find If Numbers Are Consecutive Or Not
Feb 23, 2014im trying to do a program to find if numbers are consecutive or not! if they are consecutive i need a true as a return and a false when they are not... i did this program and im sure i did something wrong because i keep only true returns ..
Example: (3,5,7) (1,2,2) (7,7,9) should return a false!
Java Code: import java.util.*;
public class Consecutive{
public static void main (String [] args){
Scanner console= new Scanner(System.in);
System.out.println("Enter three numbers");
String numbers = console.nextLine();
System.out.println( "The numbers (" + numbers + ") is '" + consecutive( numbers ) + "'" );
}//end of main
[code]...
Find Language Of Given Text In A Program
Jan 18, 2014I want a java program to find the language of a given text in a program
For Example: If user enters Hello World it should say its english language
And if he enters a spanish language as a input it should say its spanish language and so on....
Find Future Dates Switch Program
Sep 19, 2014//Program prompts user for today's day (0-6) and a number for future date.
import java.util.Scanner;
public class FindFutureDates
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
[code]...
I was thinking of a second string for futureDate to print after: "the future day is " line.
Command Prompt Can't Find Hello World Program
Jun 7, 2014I just created a Hello World program in Notepad, but command prompt still can't find it even when ran as administrator. I've even tried to use command line to run Hello World programs I've created with Eclipse but it still doesn't work. Here's proof I have JDK setup as PATH:
I've even tried having the JRE as path but that still doesn't solve my problem. I'm really trying to learn Java programming but this problem is holding me back.
Program That Find Minimum Value In Array Of Integers
Feb 3, 2014I'm required to create a program that finds the minimum value in an Array of integers.
Here is my approach :
public class Person {
public static void main(String [ ] args){
int theArray[]=new int [10];
int result = 0;
for (int i:theArray){
if (i < Integer.MAX_VALUE)
[Code]...
I can't really progress from this position. I keep getting told to change the return type to int on main method, then when i do it says change it to void..
Sudoku Checker Program - Cannot Find Symbol
Jul 9, 2014I can't get the code to compile for the driver every time i get an error message saying
SudokuCheckerTest.java:28: error: cannot find symbol
foo.displayGrid(grid);
^
symbol: variable grid
location: class SudokuCheckerTest
SudokuCheckerTest.java:29: error: cannot find symbol
foo.getGrid(grid);
[Code] .....
4 errors
Java Code :
import java.util.Scanner;
public class SudokuChecker{
public SudokuChecker(){
// displays intro code and initializes the array grid as well as using method calls.
Scanner in = new Scanner(System.in);
int [][] grid = new int [4][4];
displayGrid(grid);
[Code] ....
Could Not Find Main Class - Program Will Exit
Jan 24, 2015This is my first java program,i am using eclipse IDE-----
package day1.example;
public class MyFirstJava {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("hi");
}
}
When i saved it,it shows no error.when i run it then a pop-up says "could not find the main class.the program will exit" and in the console it says---
java.lang.UnsupportedClassVersionError: day1/example/MyFirstJava : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
[Code] ......
I/O / Streams :: Program Is To Find Most Frequently Used Words Across All Input Files
Jul 30, 2014Program is to find the most frequently used words across all the input files, where each word must appear at least once in each file.
View Replies View RelatedUnable To Find Prime Palindrome Numbers Less That A Number By Program
Oct 10, 2014I want to find the prime palindrome numbers less that a given number by my program. Here is my code, I am trying to find the method to solve the errors when I compile it. It said variable a might not have been initialized in line 41,62,86.
import java.util.Scanner;
public class Lab5{
public static void main (String[] args){
System.out.println("Please input a number");
Scanner Input=new Scanner(System.in);
int num = Input.nextInt();
[Code]...
PPS Number Generation - Netbeans Displays (Cannot Find Symbol) And Program Fails To Run
Jan 22, 2015I am writing a payroll program .The program generates random PPS numbers and then takes in users information and calculates the salary accordingly. I am using netbeans and my code is showing errors on line 18 and 42 ("cannot find symbol")on the code for grossPay(). The program seems to crash after a new PPS number is generated and will not run.
package sd_assg_2;
import java.util.Arrays;
import java.util.Random;
import javax.swing.JOptionPane;
public class SD_ASSG_2 {
public static void main(String[] args) {
String[] newPPs = getPPSno();
[Code] ....
How To Find A Sum Of Series In Java
Nov 1, 2014how to find the sum of the following series
f(x)= 1+3+5+.......+2n+1
this what I did
Java Code: for ( n=0;x>0 && x<2*n+1;n++)
{
sum=sum+2*n+1;
n++;
System.out.println(sum); mh_sh_highlight_all('java');
Is it infinite loop?
is this correct ?
Can't Find Java JDK 32-Bit Windows 7
Dec 4, 2014Im looking for the Java JDK 32-Bit for Windows 7, all i can find is 64Bit.
View Replies View RelatedJava Graph - Cannot Find Symbols
Feb 27, 2015I am taking an algorithm class and i am having some problems trying to get this program to work.The file name is Graph.java
package graphs;
import java.util.HashSet;
import java.util.ArrayList;
public abstract class Graph
[code]....
Find Minimum Spanning Tree Java
Mar 20, 2015I am using the following code: But doesn't work fine. I try to find the Minimum spanning and print it out from house to which hose.
public class MinimumSpanning {
public static void main(String[] args) {
// [][] edge= are price between each hose edgs.
int [][] edge= {{0,7,9,12,0,0,0},
{7,0,0,10,0,0,0},
{10,0,0,12,0,0,0},
{12,10,12,0,11,0,10},
{0,0,0,11,0,4,8},
{0,0,0,0,4,0,6},
{0,0,0,10,8,6,0}};
[code]....
It should only print one time. Example between K to L prints many time.
Java Math - Find Imaginary Number
Nov 2, 2014I am doing this math for my assignment where you have to find the imaginary number.
double dem = (b*b-4*a*c)*-1;
double dem2 = Math.sqrt(dem);
realPart = (-b/(2*a));
imagine = (dem2)/(2*a);
imagineneg = (dem2)/(2*a);
So basically I am trying to get it that the number inside the square root isnt negative. So lets say I enter a: 1, b: -1, c: 4.25. When you do the discriminant it would be -16 but I want that to be positive so I multiple it by -1 (thats the dem part). Then I sqaure root the whatever the answer is and then go to the imagine and imagineneg part where you find the imaginary number.
My problem is that instead of it being -16*-1 to get 16, some how I get 15.
How To Find Needed Info From Java API Documentation
May 13, 2015Let's say I'd like to print out something as a prompt without end with a new line char, so the standard System.out.println() is not an option and I'd like to find something else inplace of println().
Where to find that? I googled about that and learned printf() is the one I want, but how to get it from java api documentation.
Find Which Algorithm Java Uses For Its Sort Method
Apr 27, 2014I have been looking around and I cannot seem to find which algorithm java uses for its sort method. Merge, sort etc.
While I am on the topic BinaryTree is a balanced heap right?
Are there any libraries for depth or breath first search?
Is the ArrayList a double linked list?