Java Code For Passing By Value

Oct 7, 2014

you will be making four variables (2 primitive integers and 2 Account Objects). You will be following the steps detailed below. The challenge is to understand exactly what is happening and why. Start by coding the following two methods in a java file.

Start your main method with four variables: a, b c, d. a and by should be integer data, set them to be the values 10 and 20 respectively. Variables c and d should be Account Objects. The first account © is Ted, has $70,000 as his balance. The second account (d) is Joe, he has only $15,000 as his balance. Their account numbers are up to you to determine.Next, please print out the four variables: a, b, c, and d. Make sure that you label which ones are which. After you print these variables, please pass all four variables to a static method that you will create below. After you finish the method, please print out the four variables again: a, b, c, and d. Just as they were printed before the method.

Static methods: This method can be called whatever you want, however it will be public, static, and void. This method should take in four parameters: w and x which will be integers, then y and z which will be Account Objects.The first thing this method should do is to print out the four variables w, x, y, and z. This should be done in the same manner as you did in the main method. Next, change the first variable (w) to 15. After that, ted bought a new car. He now has only $20,000 in his account. Change the balance of y to be 20,000. Step three is to make a new Account Object named John, he has a balance of $10,000. Assign him to the variable z. Lastly, print all four variables again: w, x, y, and z.

View Replies


ADVERTISEMENT

Java And Passing By Reference

Nov 12, 2014

I know in C++ It's possible to pass by reference but what about java?

For example, can i pass the address of a health variable into a Ninja class and then

Since Ninja inherits from an enemy class pass the health into the enemy class and within there have a function that returns that same health address and takes 5 from the health returning 95.

View Replies View Related

Passing JComboBox To Another Class - JAVA GUI

Nov 15, 2014

Java Code:

createConnection();
try{
String str = "select * from Stocks";
stmt = conn.prepareStatement(str);
ResultSet rs = stmt.executeQuery();
while(rs.next())
jcbStock.addItem(rs.getString("stockID"));
}catch(Exception e){
e.printStackTrace();
} mh_sh_highlight_all('java');

I want to put this code in a class then call it in another class , but i do not how to do that. This code is working fine in my main class , but i want to write this code to another class for call it in main class.

View Replies View Related

Passing Java Bean Name In A Method

Jun 13, 2014

Here I am taking response data from JSON using jackson API.I found a feature like using Jackson the properties can be set to bean properties.
 
private static String readUrl(String urlString) throws Exception {       
BufferedReader reader = null;       
try {           
URL url = new URL(urlString);           
reader = new BufferedReader(new InputStreamReader(url.openStream()));     

[Code] ....

I got the correct output here. But now I want to generalize my method into a utility class so that I can reuse the same method for setting response data directly to respective beans as given below:-
 
My question is how will I pass the bean object in my utility class?

public static Object getResponseData(String response,[b]String bean[/b]) throws Exception {       
ObjectMapper mapper = new ObjectMapper(); 
mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);       
JsonNode root = mapper.readTree(response);

[Code] ....

View Replies View Related

Passing File Path To Servlet Using Drag And Drop Method In Java Web

Jun 18, 2014

currently I am doing my java web application project ,and it has following steps 1) Upload the txt files 2) java servlet gets the txt file's url , read the data and do the calculation 3) pass the results

I almost finished the second step , and working on the first step .Since there are so many input files at a given time , i have to use drag and drop method to get the file's location.how to pass file's path to servlet.( servlet code can read the data from the given txt file path )software used - tomcat and netbeans 8.0

View Replies View Related

Can Use Java Code From OpenScript Or APIs In Separate Java Program?

Oct 24, 2014

I want to develop a Java program that uses OpenScript APIs to test my applications. The OpenScript framework automatically creates the Java Code so I was thinking of either using this code or create my own using the APIs.
 
I tried both options using NetBeans but I'm getting errors everywhere starting with the library import. I'm pretty new to Java so I'm sure I'm missing a lot of things here. I pasted the code below from the OpenScript framework that want to use in a stand-alone file for your reference.,
 
import oracle.oats.scripting.modules.basic.api.*;
import oracle.oats.scripting.modules.browser.api.*;
import oracle.oats.scripting.modules.functionalTest.api.*;
import oracle.oats.scripting.modules.utilities.api.*;
import oracle.oats.scripting.modules.utilities.api.sql.*;

[Code] ....

View Replies View Related

Fibonacci Code In Java

Nov 30, 2014

how do we get the following numbers (1 2 3 5 8 13 21 34 55 89) out of the following code? I can't get my head around this loop....

HTML Code:

public class Fabnoci{
public static void main(String[] args)
{
int n=10,i,f0=1,f1=1,f2=1;
for(i=1;i<=n;i++)
{
f2=f0+f1;

[code]....

View Replies View Related

Java Code For Next Button?

Jul 2, 2014

i have made a phone directory and i have also maintained a database for this. i want on clicking the next button each row from database table display one by one on the GUI into their relevant text Fields. i have written this code , this code show the last row of the table on single click on next button. i want one by one row on each next button click.

private void next_contactActionPerformed(java.awt.event.ActionE vent evt) {
try {
String Url = "Jdbc:OdbcirDSN";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection(Url,"sa","mysql");
String sql = "SELECT * FROM PersonInformation";
PreparedStatement pstmt = con.prepareStatement(sql,
ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR _UPDATABLE);

[code].....

View Replies View Related

How To Code XML Web Service To Java

Feb 4, 2014

How to call web service from xml to java. I'm just new in using Java.

View Replies View Related

Code Breaks After Upgrading To Java 8?

Jan 22, 2015

We recently upgraded to JDK 8. Since then, a section of code in a jsp file breaks. The code is this:

ArrayList all = new ArrayList();
final List tsd = timeSeriesBean.getTSData();
all.addAll(tsd); 
Collections.sort(all, new Comparator() {
public int compare(Object o1, Object o2) {
TSData t1 = (TSData)o1, t2 = (TSData)o2;
int res = t2.getDate().compareTo(t1.getDate());

[code]....

The error message is this:

An error occurred at line: 65 in the jsp file: /TS/VerifyImportTSData.jsp The type new Comparator(){} must implement the inherited abstract method Comparator.thenComparing(Function, Comparator)
 
64:
65: Collections.sort(all, new Comparator() {
66: public int compare(Object o1, Object o2) {
67: TSData t1 = (TSData)o1, t2 = (TSData)o2;
68: int res = t2.getDate().compareTo(t1.getDate());

just trying to maintain some old java code that I can support until it is rewritten.

View Replies View Related

Cucumber In Java Through Code Without Using Junit

Sep 2, 2014

i want to use cucumber in java through code. previously i have used it with Junit. but now i need to implement it through coding for the purpose of automating.

View Replies View Related

IE Mistaking Java Code For ActiveX?

Feb 4, 2014

I have a new user on my website - it's password protected etc. and I'm just giving them the initial walkthrough. I have a java applet that plots charts and when he goes to this page he gets no chart and at the bottom of the pages there's a bar with the message "Internet Explorer blocked this website from installing an ActiveX control. What's the risk?" and then there's a button to say Install.

I said, it's just for you to permission running the java applet but his IT guy is saying that java doesn't trigger warnings about ActiveX controls so he's nixing the approval.

View Replies View Related

Best Way For Parsing C Code Based On Java?

Dec 10, 2014

I have to write Scanner and Parser for the C-Code based on Java and obtain Abstract syntax tree(AST) . I am allowed to use tools like ANTLR, CUP. But i should be able to expand all macros in my code to its basic low level data type like int, boolean and whats the best approach?How to start initially?

View Replies View Related

Java 1.4.2 And Eclipse Code Will Not Compile Or Run

Jan 22, 2014

I made just a simple hello world class and i can not seam to make eclipse run it in any way not even the console.

View Replies View Related

Java Code Compiles But Doesn't Run

Mar 29, 2014

In fact, I'm not yet past that "Hello World" program.I'm following the steps in "Head First: Java" book, and reached that point where one is ready to write his/her 1st Java code. Here's mine:

public class MyFirstApp
{
public static void main (String[] args)
{
System.out.println("I Rule!");
System.out.println("The World!");
}

}

As simple as it should be, and compiles fine producing the correspondent class. But it doesn't run, however, and spits the following execution-time errors:

Exception in thread "main" java.lang.UnsupportedClassVersionError: MyFirstApp : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:643)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)

[code]...

View Replies View Related

Calling Method From DLL In Java Code

Mar 6, 2015

I need to access a method from a dll in java as below and is giving an error

"Exception in thread "main" java.lang.UnsatisfiedLinkError: Testdll.Decrypt(Ljava/lang/StringLjava/lang/String;
at Testdll.Decrypt(Native Method)
at Testdll.main(Testdll.java:31)
"
I have included the jna-4.0.0.jar and the HashMatchCryptography.dll to the project in eclipe and the java-library-path has the path for the lib

import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.NativeLong;
import com.sun.jna.Platform;
import com.sun.jna.*;
import java.lang.*;

[code]...

View Replies View Related

Is It Possible To Prevent SQL Injection In Java Code?

Jul 25, 2014

How can we prevent SQL Injection in Java Code?..is there any Special cases..

View Replies View Related

Deleting Spaces In Java Code

Mar 1, 2014

My method below works fine to print a matrix but when it prints every row, it is printing extra 4 white spaces which is not required. How can I delete those extra spaces at the end? when I use

System.out.print((matrix[i][j] + " ").replaceAll("^s+", ""));

It trims every thing including the spaces I needed for my matrix. So where should I put replaceAll("^s+", "") ?

Java Code:

private static void printMatrix(int[][] matrix) {
System.out.println();
System.out.println("Matrix:");
for (int i = 0; i < matrix.length; i++) {
for (int j = 0; j < matrix[i].length; j++) {
System.out.print(matrix[i][j] + " ");
}
System.out.println();
}
} mh_sh_highlight_all('java');

View Replies View Related

No Text When Compile Java Code

Mar 7, 2014

Why can't I see the text when I compile the java code?

Java Code:

import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.*;
public class WorldTravel {
public static void main (String[] args){
JFrame f = new JFrame("World Travel!");
BG_text p = new BG_text();

[Code] ....

View Replies View Related

Java Binary Tree Code

Apr 5, 2014

I have written a code to get all the nodes below a current Node and it is working but I need to get it to look better if possible. To get the number of nodes below I have created an Array List, which I then go to the first Node below and add all the people to the Array list on the same level till I get to the end of the level, then I go down again until I cannot go down any more. Is there a way I can have my code without having to use an array List? I have put my code below. The brieff about the tree is that you have a parent and below the Parent are children who can have brothers and sisters next to them and after that they also have children below that. The method is trying to find the number of children below any given child

private LinkedList<Node> TempQueue = new LinkedList<Node>();
public int noOfYoungerChildren(Member p1){
Node tmp = find(p1);
return countYoungerChildren(tmp);

[code]....

View Replies View Related

Download Pic From URL - Simple Java I/O Code

Nov 24, 2014

I got a very simple code:

InputStream inputStream = null;
OutputStream outputStream = null;
try {
URL url = new URL(imgfm);
inputStream = url.openStream();
outputStream = new FileOutputStream(imgto);
 byte[] buffer = new byte[2048];
int length;

[Code] ....

I have several pic to download (e.g 30) however, the code work for some pic (workable for a random number of pic, sometimes workable for 10 pics but sometime can only download 1 pics).

I try to input several println code to found out the problem. finally i found that all the code stop (it's stop as when i use debug process in eclipse, it get no respond) and the final appear code under console is:

2048
Start abc/testing.jpg
Finished
2048
Start abc/testing.jpg
Finished
2048
Start abc/testing.jpg
Finished
1935
Start abc/testing.jpg
Finished

It cant even go to "System.out.println("Can come to here!");"

View Replies View Related

Abstraction Of UML Diagrams From Java Code

Feb 19, 2014

I am working on project "Abstraction of UML diagrams from java code". I am searching for a at least few codes to create class, object, sequence, activity, usecase diagrams.

View Replies View Related

How To Write A Code In Java To Scan Documents

Nov 5, 2014

I want to write code in java to scan documents.

View Replies View Related

Login To HTTPs Website Using Java Code

Dec 30, 2014

I am running java 1.8 under 64 bit windows 7, using the code below I failed to log in, I am getting the log in page but not being logged in.

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

[Code] .....

View Replies View Related

Swing/AWT/SWT :: Closing Another Application Using Java Code

Feb 21, 2014

Following code I use to run or Launch another application

try {
Runtime.getRuntime().exec("rundll32 url.dll, FileProtocolHandler " + "Path of Application's EXE File");
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e, null, JOptionPane.ERROR_MESSAGE);
}

if the above code is to launch another application using java then how can I close/exit the same(another) application using java code once I press the exit button of my java app.

View Replies View Related

Simulating Roll Of D6 Dice With Java Code

Apr 21, 2015

I am trying to figure out how to simulate an ability score calculation for an RPG character creation. The way I want to do it is to have 5 d6 dice rolled and then the best three of the 5 rolls are added together for a maximum of 18 points and a minimum of 3 points.

Now I know how to generate random numbers, but I do not know how to have the best 3 picked out. What I have right now is super simple.

package javaapplication12;
import java.util.Random;
public class JavaApplication12 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {

[Code] ....

So this gives me my five rolls but then have the code pick out the best three every time the program is run is kind of an issue for me.

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved