Local Variables In Java

Jan 11, 2014

you can also refer this link Local variables in java?Local variables in java?To meet temporary requirements of the programmers some times..we have to create variables inside method or bock or constructor such type of variables are called as Local Variables.

----> Local variables also known as stack variables or automatic variables or temporary variables

----> Local variables will be stored inside Stack.

-----> The local variables will be created while executing the block

in which we declared it and destroyed once the block completed. Hence the scope of local variables is exactly same as the block in which we declared it.

package com.javatask.in;
class A{
public static void main(String args[]){
int i=0; // Local variable

[code]....

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Is It Better To Assign Objects To Local Variables

May 23, 2014

Let's say I have a loop that loops through objects in an ArrayList then does stuff with them. Is it better for me to store the object in a temporary local variable and do stuff with it, or always use the ".get(arrayindex)" thing?

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Random Number Generator And Local Variables

Jul 31, 2014

Basically this code is supposed to create an int array of 50 elements, then pull the elements listed in positions 1-6 to make a lottery draw.

Problem is it gets down to that last "For" statement and then says "duplicate local variable i." If I attempt to separate it from the previous for loop with curly braces, then it gets mad and says it doesn't know what "local variable i" even IS. So I tried changing it to "j" in the last statement and it couldn't recognise that either. I feel like I need to change the variable name in that second for loop but I'm not sure how to make it understand that the second variable is going to be outputting the values from the first variable.

public class Lottery {
public static void main(String[] args) {
// TODO Auto-generated method stub
int []nums = new int [50];
for (int i = 1; i <50; i ++) {nums[i] = i;}

[Code] ....

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Define All Local Variables And Method Parameters As Final?

May 16, 2015

I am using findbugs and PMD as a code analyser. I am keep getting warnings to use local variables and method parameters as final.

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Sometime i have a private method which is 1 line longer. Sometime it is annoying to use final.

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Feb 23, 2014

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Mar 22, 2014

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Apr 7, 2014

So like, in lua programming language you can do things like,

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Array[3] = true

Can you do atleast something like this in java or?

I would like to do this because if let's say I was making a game, I could define what tiles are passable and which are not and then their location or something, so like this:

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[Code] ....

Or something...

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I am unable to understand the meaning of this sentence "final reference variables must be initialized before the constructor completes.",What is trying to imply?

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I have An Issue With My Java Applet. Im Trying To Share My Variables With Another Class, But Its Not Working.

Class 1

package com.Tobysmith10.game.main;
import java.applet.Applet;
import java.awt.Graphics;
public class Game extends Applet{
public void init(){
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}

Class 2

package com.Tobysmith10.game.main;
import java.applet.Applet;
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x = 100;
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}
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So im sharing the x and y variables with the Class 1 , but I get yellow lines under it and when i run the program, it crashes, how do I get class 1 to recognize the variables from class 2 ?

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Jun 25, 2014

public class Ball {
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Jun 19, 2014

I am reading input from a file that has following information:

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The code is below ( I have not included reading input code):

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Array2 is populated using the same as above code. However when I use the following code:

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May 12, 2015

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I get a notion in my lovely IDE (eclipse) reminding me I'm not using nextDate ("The value of the local variable nextDate is not used"). But I feel I really do use nextDay here. So either I'm making a coding(style) mistake giving me this notion or I should just ignore this notion.

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Feb 3, 2014

Here, I have just tried out to take a value from the database and storing it into local variable then I want to have that value in the value attribute of <input> tag but somehow, I can't get it..

Here, below is my code..

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ page import="java.sql.*" %>
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<html>
<head>
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[Code]...

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is it necessary that inner classes inside a static method be static . If yes Why?

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Feb 18, 2015

Below is my ejb-jar.xml

<!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN' 'http://java.sun.com/dtd/ejb-jar_2_0.dtd'>
<ejb-jar>
<display-name>TestEJB</display-name>
<enterprise-beans>
<session>
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[code]....

All my classes implement proper local classes EJBLocalHome and EJBLocalObject.This configuration used to work fine in JBOSS 5.1.0 G

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[Code] .....

Eclipse: Exception in thread "main" java.lang.Error: Unresolved compilation problem:

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More Info:

Class.forName("oracle.jdbc.driver.OracleDriver");
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Like in this example
<%!
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%>
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Sep 30, 2014

I have a question regarding best practice in using local variables as my method return variable. I have a method like this:

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//log any problems
}
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And I'm wondering if I rewrite like this if I'll see some performance optimization benefit:

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//log any problems
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Oct 9, 2014

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Fiddle:

$('#addnewline').on('click', function (e) {
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var $textarea = $('#thetext');
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return $(this).val().substring(0, this.selectionstart) + "<br>" + $(this).val().substring(this.selectionstart);
});
});
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Apr 5, 2015

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import java.net.*;
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public class Client {
public static void main(String[] args) throws Exception{
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[code]....

I don't understand the exceptions, maybe I should give them a look before continuing with sockets. Being frank I'm not really sure why the while(true) is there.

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import java.net.*;
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public class ServerThread extends Thread{
Socket socket;
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this.socket = socket;

[code].....

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Mar 6, 2015

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[Code]...

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[Code]...

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Am I doing something wrong?

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Feb 16, 2015

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