I just started Java programming bout 3wks ago and using jGrasp since then. But ive started using eclipse and just wondering if it can be set up to use allman style? I dont like having to use tab and backspace to get my brackets in line and neat. I decided to ask before i went snooping around the settings and mess something up since im not to familiar with it right now.
View RepliesI have a routine that returns a boolean. If any of a series of tests fails, the routine returns false, otherwise it returns true. For example, the routine might test for whether or not an integer is both odd and greater than 99, thus:
public boolean oddAndOld(int x)
{
if (x % 2 == 0)
return false;
if (x < 100)
return false;
return true;
}
I like the above because it suggests that "true" is the condition that applies if the incoming parameter meets all the required criteria. But I've sometimes seen this style used:
public boolean oddAndOld(int x)
{
if (x % 2 == 0)
return false;
if (x < 100)
return false;
else
return true;
}
I like this less because, among other things, if that last criterion is removed, the "else/return true" must be moved up into the immediately preceding test (or else leave some funny whitespace, depending on how you go about removing the departing "if" statement), but it does avoid suggesting that "return true" is hard-coded (that is, it reinforces that "true" is a conditional return value, not inevitable).
The Font style constants are of int: int[] fontStyleList = new int[] {Font.PLAIN, Font.BOLD, Font.ITALIC};But what do I do when I want to add the names such as PLAIN etc. as the name of a menu item?
The following is not going to work, right!String[] parts = (fontStyleList[i].toString()).split("."); or String[] parts = ("" + fontStyleList[i]).split(".");rbStyle = new JRadioButtonMenuItem(parts[1]);
Is there another way to do this or should I just do another array with the names as a String?
I am using the Javafx 8 Date Picker. Its works fine. I have defined a stylesheet for my application and in that style sheet i have a style for Button. I apply this style to the every scene. Now my question is: When I use the datepicker and I click on the calendar icon, the datepicker popup appears and the left and right arrows adjacent to month and year fields in the seems to pick the style of the button class from style sheet defined in my application., Is there a way to avert this and tell datepicker to use default styles and not the styles defined my application.
I tried removing the style at runtime from the scene, but of no use.
I've been into java for about 4 months now, No complaints so far, it's pretty awesome! So I understand Polymophism pretty good, I did some Animal classes and it worked out neatly.
However. I just can't seem to find my way in OOP when trying to implement in on a Calculator Class I wrote. As you mind know, a calculator can be separated into many classes. But I actually just want it to be separated into some OO like: | Calculator | CalcGUI | CalculatorFunctions | CalcRun.
I tried separating the single Calculator class, however, my calculator Buttons didn't work after that, anymore..
here is my code:
import java.awt.GridLayout;
import java.awt.Panel;
import java.awt.TextField;
import java.awt.Button;
import java.awt.Menu;
[Code] ....
I have a column of my TableView that just shows row numbers, and I would like to style the cells in that column so that they appears just like a column header (so the same styling as the headers use). I presume there is some simple way to do this by tapping into the right style class, but I am not sure which one.
View Replies View RelatedI have a VBox with 20 buttons and I have this style applied (menu.css) (only for VBox wrapper):
.button:focused {
-fx-background-color: #0768A9;
-fx-text-fill: #FFFFFF;
}
But when I pressed other button outside the VBox the style disappears, because the other button get the focus.
How I can do to keep the last button pressed with a custom style? (Only for buttons containing the VBox).
I'm attempting to make a simple Pythagorean Theorem program (A squared + B squared = C squared) but am running into problems when I write it as object oriented. The darn thing works when written as a simple process, but that isn't Java now is it? Here's the simple:
public class PythagoreanTheorem extends ConsoleProgram {
public void run() {
println ("Finding C from A and B.");
double a1 = readDouble("Input A: ");
double b1 = readDouble("Input B: ");
double aSq = (a1*a1);
double bSq = (b1*b1);
double cSq = (aSq + bSq);
double c = Math.sqrt(cSq);
println ("C = " + c);
[code]....
I'm not sure if that's the right place to ask
But I am a bit confused:
I know that JDK means "Java Development Kit" , but isn't Eclipse the same thing? (so why it's called "IDE"?)
Or maybe Eclipse is a type of JDK?
Or actually JDK and Eclipse are 2 different things
I tried to run the program in eclipse(See Attachments 2 3 4) but I got the following errors(Attach 1), I have attached them as screen shots.
1.Errors
2. Mapper code
3. Reducer code
4. Driver
Since am new to java and hadoop, I want to know the procedure step by step in a brief manner.run this program and rest of the two statements successfully.
i have programmed a game using JPanel and JFrame. My App is of this type (if this is relevant to the problem):
public class Main extends JPanel {
private JFrame frame;
public static void main(String[] args) {
new Main();
} public Main() {
frame.setSize(WIDTH, HEIGHT);
[Code] ....
The problem is, When i export the file in eclipse as Runnable jar file,and run the exported file, it gives me a blank screen (white default) and nothing is running. Whereas, normal debugging of the game is working quite well.
i have an older file I was working on 2 months ago and when i try to open it in eclipse I get a message corruption error. I know this is not possible since I was just working on it a while back, and it's the same program version as what i am currently using..Or would I do a file import instead?
View Replies View Relatedit gives me an error at the end class part some syntax error insert "}"..
* Course: IT110 - Introduction to Programming
* Filename: MyCustomShirtsPhase1.java
*
* Purpose: Created a simple online ordering system for My Custom Shirts customers
*/
import javax.swing.JOptionPane;
[code]....
I'm installing sonarQube in Eclipse indigo, How to run SonarQube in Eclipse Projects and adding sonar plug in into Eclipse IDE.
View Replies View RelatedI'm quite new in android programming and I've meet some problem in push and pull method. I have created 2 activity in my app 1 of them call Push_activity and Pull activity(Code are shown below). The String that I keyed in PushActivity have to "transfer" to the PullActivity when the button is pressed:
PullActivity
but1 = (Button)findViewById(R.id.buttonll);
tx = (TextView)findViewById(R.id.editText1);
tx.setText(getIntent().getStringExtra("extra"));
but1.setonclickListener(new onclickListener(){
[Code] ....
The app works fine when it started. When I press the button in PushActivity, it crashed and the error came from my textview in PullActivity.
I'm new to java programming and I've been trying to make my first program in eclipse for a while, and I finally managed to do that. Well my problem is that I want to be able to use my program without having to open eclipse and opening my program from there, is there any way to do that ?
View Replies View RelatedI am new to Java and Eclipse. What does lined-out lines mean?
View Replies View RelatedI am trying to .wav file using java eclipse ..
[B]import java.io.* ;
import sun.audio.*;
public class AudioDemo{
public static void main(String[] args)
throws Exception
[Code] ....
And I am getting the following errors ...
Exception in thread "main" java.io.FileNotFoundException: E:pppp.wma (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at AudioDemo.main(AudioDemo.java:10)
I'm programming a game in Eclipse using Java for Android. I was wondering if any good example of a Health bar using Images. All I can find is people using the progress bar, but i feel that's unprofessional looking.
My goal is to layer 2 images. 1 being the frame of the health bar, 1 being the value of the health bar. I figured it would be something like moving the value health bar image few pixels over depending on the variable of health.
import java.io.*;
public class ReadNumbers
{
void input()
{
String File_name = "num.txt";
File numbers = new File(File_name);
[code]....
I am using eclipse and I went to file, add new file and named it num.txt:shot.png like show in the picture.
I'm trying to finish this game of hangman for java in the program eclipse. Currently when I run the program I get this in the text field:
in randomword
in string2Array[Ljava.lang.String;@22998b08
v
i
d
e
o
g
a
m
e
s
New Game
Enter a letter: s
s
???????????
After I try entering a letter it doesn't prompt for the user to enter another, nor does it change the ? mark when the user guesses correctly.
Here's the code :
import java.util.Scanner;
public class Hangman {
int NUMBER_STRIKES = 7;
int strikes = 0;
String userguess= " ";
private ArrayFunctions func = new ArrayFunctions();
String currentWord;
[Code] ....
I write lot of java code everyday. Sometime in hurry I forget to close the resources (connection,file,etc,) in JAVA6 and this causes memory leak issues. I am looking for an eclipse plugin which can complain for these minor mistakes. Also I am looking for some more eclipse plugins which can improve my source code quality like naming conventions, code redundancy, complexity, too long code outside methods, etc,.
View Replies View RelatedI am watching BrandonioProductions on youtube. His videos are pretty good, but he doesn't seem to get errors where I get them. Here is an example.
public class compareUnequal {
public static void main(String[] args){
compareTwo();
}
public static void compareTwo(){
String x = "david";
String y = "Notdavid";
if (!x.equals(y)){
System.out.println("Not equal");
}
}
}
It runs ok, but asked me to proceed when there is an error, but I can`t figure out where the error is!
Follow the //? FIRST and SECOND notes, then I understood that Java has GOTO as Keyword for future versions and that usually one can avoid GOTO using break inside the cycles, but I need a jump( salto) in the code.
import java.util.Scanner;
public class ArrayOrdinati {
public static void main (String[] args){
int[] Array = {5,3,1};
int e=Array.length;
int b;
[Code] .....
I'm trying to JFileChooser to open up a window. I'm just trying to learn how to use it for a school assignment this week. The problem is I can't get anything to show up. I can create a new window and print to the console without errors, but JFileChooser doesn't do anything. No errors either.
import java.awt.*;
import javax.swing.*;
public class TestingStuff extends JFrame {
public TestingStuff() {
setTitle("This is a new window!");
setVisible(true);
[Code] .....
I didn't see anything specific to Android. I am a very basic beginner when it comes to JAVA and Android programming.
The app is a very simple comic strip viewer that views 3 panels of a comic strip one at a time. My problem is going from a second activity to another. I can go from the main activity to the second fine but when I press the next button to go from the second activity to the third nothing happens. I have tried a few different things but end up with either nothing happening or the app crashes.
Here is my MainActivity Code:
package net.androidbootcamp.comicapp;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
[Code]...
Here is the code for the second panel:
package net.androidbootcamp.comicapp;
import android.app.Activity;
import android.os.Bundle;
public class Panel2 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
[Code]...
Here is the code for Panel 3:
package net.androidbootcamp.comicapp;
import android.app.Activity;
import android.os.Bundle;
public class Panel3 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
[Code]...
And here is the manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="[URL].."
package="net.androidbootcamp.comicapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
[Code]...
I am sure it is something very simple but I am not sure what it could be.