Unable To Get GPA Of Student As Command Line Argument
Feb 15, 2015
I'm writing a Java program to get the gpa of a student as a command line argument. Then display the class of the degree according to some criteria. Here is my code. But it says "ArrayIndexOutOfBoundsException :0". How can I fix this?
public class Stgpa
{
public static void main(String[] args)
{
double gpa= Double.parseDouble(args[0]);
if(gpa>=3.6)
System.out.println("Class of the degree is: First Class Hons");
else if(3.6>gpa && gpa>=3.4)
I'm having trouble with how to read a text file into my program so the words can be sorted alphabetically. Should I use something like a FileReader?
An example of what I'm trying to do is a .txt file that holds the statement "java is a simple object oriented and distributed and interpreted and robust and secure and dynamic."
The output should organize the words like so: and and and and distributed dynamic interpreted is java object oriented robust secure simple
Here's what I have:
public static void main(String[] args) { if (args.length != 1) { System.out.println("Usage: java AscendingAlphabet"
[Code].....
I can never get it to read the file correctly, it just prints the "usage: java..." statement.
I want to read property file in java from command line argument,i.e. if i have some parameters which i have to use separately , i comment the parameters which i don't have to use that time , then uncomment when i have to use.
Is there and way to read the required parameters through command line arguments in java.
We are testing the newest release of JRE 1.6.0_85 (x86). We are running into an issue when Java launches through IE 10. We are seeing a command prompt window with the following message as soon as Java launches in IE 10:
Rejecting attempt to specify unsupported characters in command-line argument: -D java.security.manager
The window is labeled: C:Program Files (x86))Javajre6binjp2launcher.exe
The application using Java does launch and run correctly, but the command prompt window stays until the application is closed and Java is stopped.
If we add the URL for the website using java to our trusted sites in the local intranet zone and turn off protected mode for that zone, then the command prompt window does not display. This does not happen with the previous version of JRE (1.6.0_81). What has changed in this newest version? We do not want to turn off protected mode.
I am trying to complete this question. I understand the most of it but I haven't go a clue to read in the file name.
Full question: Implement a program that reads in a Java source code file and checks to see if it has balanced {}brackets. Your program should use a stack, implemented as a linked list, to check the brackets.
NOTE: you can use a reference called top which points to the head of the list. Your program should run as a command line program and should take a filename as an argument and print one of BALANCED or NOT BALANCED.
For example: c:> java checkBalanced "myProgram.java" BALANCED
I'm trying to compile one of my Selenium WebDriver .java files to run from the command line. Since it's just one file, I only need to compile the file into a .class file to run it from the cmd line. I don't need to make a .jar file.
The .java file runs fine inside Eclipse, so now I need to make it run from the windows command line.
I am trying to pass an object of type Product p to my editProduct method, however trying to call p.getName(); doesn't work and throws a NullPointerException. The same kind of thing works for my displayRecord method (in a different class) and I can call .getName() on Product p, also passed as an argument to that method. Below is my editProduct class. The NullPointerExcepion is being thrown at line 61 (i.e., nameField.setText(p.getName());).
I don't know if I explained right, so here's a line thing of how the classes relate:
And as a side note: adding the line p = new Product(); fixes it and successfully runs the class (including the Save and Quit parts) but obviously I want it to specifically refer to the Product I pass to the method.
I'm asking a question because I don't understand how Product p could possibly be null, because the argument is passed through my DisplayRecord class, which also takes a Product p argument and works. In that class, I have declared Product prod = p; and prod is what I am passing to editProduct.
Can we pass array as a cmd line argument as follows ?
>java TestRun file[], number if yes, in the main(), how do we capture this array ? public static void main(String [] args){ String [] files = args1 ; // or will it be String [] files = args1[]; }
Now everything works in Netbeans but running it from the command line, i get an error message ".java uses unchecked and unsafe operations".I have added a bit more code to the code above
for (int i = 0; i < args.length; i++) { System.out.println("args[" + i + "]: " + args[i]); }
Just not sure how to run it from the command line,
I have a program that runs in the terminal (I use Ubuntu). It asks the user for a String, does something with it, and terminates.It works in the NetBeans terminal, but not outside of it. Specifically, regardless of what I input, it doesn't continue with the program. I enter something, press enter and it just goes to the next line in the terminal.
Java Code:
Scanner scan=new Scanner(System.in); System.out.println("Enter the music directory:"); String path=scan.nextLine(); mh_sh_highlight_all('java');
how do I pass in arguments when I run the program (still in Linux)? Is there a way to check if the program was launched from the terminal or not?
I'm facing another problem with the HFJ code which i edited some what (as given HFJ) to make it work through command line..BeatBox using command line. Getting compiled but no sound coming..
package com.BB.getPlayer; import javax.sound.midi.*; public class MiniMusicAppCmd { public static void main(String[] args) { // TODO Auto-generated method stub
I am trying to interact with the command line prompt and script the responses for some config. When asked if user wishes to continue I would like respond yes or no, however I would like this response to be automated without any user interaction. I am able to launch the .exe file however when the command prompt is launched I cannot get any further responses to it.
p Java Code: ublic static void runConfigure(String[] refBox1,String outDir2) throws IOException{ String s = null; try {
I'm suddenly having trouble running classes from the command line. Previously, things were working. I cant imagine I'm doing anything differently. The sample code is below:
Code:
class HelloWorldTester{ public static void main(String[] args){ System.out.println("Hello World"); } }
Terminal output:
C:UsersmattmanDropboxProgrammingJava>javac helloWorldTest.java C:UsersmattmanDropboxProgrammingJava>java HelloWorldTester.class Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldTester/clas s Caused by: java.lang.ClassNotFoundException: HelloWorldTester.class at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: HelloWorldTester.class. Program will exit.
I am just learning Java and I am have a problem running programs at the command line. I have the following code:
package java_help; import java.io.IOException; class help {
[Code].....
I can run this program in net beans were I originally wrote the program and it runs fine there. I also compile the program at the command line using javac but when I go to run this program I get a error message that it cant find main.
What I'm supposed to do is use the time class and take the command line arguments and print them as the start and end times and then calculate the elapsed time between the two. My issue (hopefully my only as I have been working on this all day now) is that I cannot call the command line arguments using LocalTime. Below is what I have so far.
public class Clock { private LocalTime startTime; private LocalTime stopTime; //default constructor-initialize startTime to current time public Clock(){ this.startTime=LocalTime.now();
I am trying to make a method that takes in a cmd command (nslookup, systeminfo, etc), and outputs the response to a text file. I have tried a dozen different ways with no success. below is my most current failure. It succeeds when i run it, but nothing shows up in the text file.
public static void runSystemCommand(String command) { command = "ping 192.168.1.3"; try{ Process proc = Runtime.getRuntime().exec(command); InputStream in = new BufferedInputStream(proc.getInputStream()); OutputStream out = new BufferedOutputStream(new FileOutputStream("C:NetPanelDataping.txt"));
map1 is hashmap which contains the destination ip adress.When i run the above code the exit code for process (pr) is 1 and hence the tshark command is not executing properly.
