Reading inputs in console from user

I wanted to know if its possible to capture inputs from user in console apps. Can you just do "System.in.read(variablename);" ????

If you're just starting, I recommend that you learn to use the Scanner class methods. The class documentation has examples. It will read from the console, as well as any other source that exists, and allows much more flexibility. (The class is new whit Java 5.)

Similar Messages

Output while reading input in console

im making a little console chat program, and i need to be able to send/receive, but, whenever a user is typing something in, nothing can get outputted. is there a way to do both at one time?

u can go for two threads..one thread which reads the input from the console and write to the socket and another thread which reads from the socket and write to the console..
i can give a simple implementation which is easy to understand and implement..mail me at [email protected]
all the best
sandeep

Read Input from console !!!

Im am very new to java and trying to learn java ..
Now the problem i have is, I have to read input from console without using the BufferReader method..
Please tell me how to go about it..
I have a assignment to complete and im not able to figure out the way out.
Help ..

http://java.sun.com/j2se/1.4.1/docs/api/java/lang/System.html
Read first about the System class provided by Java.
Select the 'in' method of System class and it will take
you to the InputStream.
http://java.sun.com/j2se/1.4.1/docs/api/java/io/InputStream.html
An essay way of reading input is:
"value?"=System.in.read();
Try and see if this works. It will not use the
BufferReader portion, but it gives you another way
of reading from the console.

Read input from user and strore in ztable

Hai,
    could you please give some examples of How to read the input data from user and store in Ztable.
Thanks

Hi Prasanna,
If i understood your requirement correctly,
The below code will insert record in DB table as soon as you enter the value in two fields and press enter button .
Go through the below code,
<b>In Layout</b>
<%@page language="abap"%>
<%@extension name="htmlb" prefix="htmlb"%>
<htmlb:content design="design2003">
<htmlb:page title = "first page ">
    <htmlb:form>
      <htmlb:inputField id="field1"/>
      <htmlb:inputField id="field2"/>
      <htmlb:button       id="submitButton" text = "Press Me"
                          onClick       = "myClickHandler" />
    </htmlb:form>
</htmlb:page>
</htmlb:content>
<b>In Oninputprocessing event</b>
CLASS CL_HTMLB_MANAGER DEFINITION LOAD.
DATA: event TYPE REF TO CL_HTMLB_EVENT.
data : begin of wa,
         matnr type mara-matnr,
         ersda type mara-ersda,
         end of wa.
event ?= CL_HTMLB_MANAGER=>GET_EVENT( runtime->server->request ).
IF event->id = 'submitButton' AND event->event_type = 'click'.
    DATA: data TYPE REF TO CL_HTMLB_INPUTFIELD.
    DATA: data1 TYPE REF TO CL_HTMLB_INPUTFIELD.
    data ?= CL_HTMLB_MANAGER=>GET_DATA( request = runtime->server->request
                                           name     = 'inputField'
                                           id       = 'field1'
    IF data IS NOT INITIAL.
     value = data->value.
      wa-matnr = data->value.
    ENDIF.
    data1 ?= CL_HTMLB_MANAGER=>GET_DATA( request = runtime->server->request
                                           name     = 'inputField'
                                           id       = 'field2'
    IF data1 IS NOT INITIAL.
     value = data->value.
      wa-ersda = data1->value.
    ENDIF.
   insert into ZAZAZ_BSP CLIENT SPECIFIED values wa.
ENDIF.
Regards,
Azaz Ali.
Don't forget to reward points.

How to calculate the total from users input in switch?

I dont know how to hold the input from user. But here is part of my coding :
System.out.println ("Type 1 for buying Ruler"+
"\nType 2 for buying Pencil");
stationaries = console.nextInt();
switch (stationaries)
case 1 : System.out.println("Ruler per unit : MYR1");
System.out.println("How much does you want? : ")
wantRuler = console.nextInt();
sum = wantRuler * 1;
break;
case 2 : System.out.println("Pencil per unit : MYR2");
System.out.println("How much does you want? : ")
wantPencil = console.nextInt();
sum = wantPencil * 2;
break;
How can I calculate the total for both of the stationaries if user wants 5 for ruler and 6 for pencil?

Note: This thread was originally posted in the [Java Programming|http://forums.sun.com/forum.jspa?forumID=31] forum, but moved to this forum for closer topic alignment.
Use code tags to post codes -- [code]CODE[/code] will display asCODEOr click the CODE button and paste your code between the {code} tags that appear.

How to Get input from User and Display it's Value

Hi ,
I need to get 2 inputs from user and to display it's Mutilple Value.
The Below Code is working fine to get 2 Input's from user,but it display a Junk value as a Result .How to
overcome this Problem. I need to display it's Mutilple(a*b) value of "a " and " b".
import java.io.*;
class Mul{
static int a=0;
static int b=0;
static int Count=0;
public static void main(String args[])throws IOException{
BufferedReader br =new BufferedReader(new InputStreamReader(System.in));
do{
a=(char)br.read();
Count++;
b=(char)br.read();
if(Count==2)
System.out.println("The Multiplied Value is "+a*b);
}while(Count<2);
}

Changed to Integer but still the problem persists.
import java.io.*;
class Mul{
static int a=0;
static int b=0;
static int Count=0;
public static void main(String args[])throws IOException{
BufferedReader br =new BufferedReader(new InputStreamReader(System.in));
do{
a=(int)br.read();
Count++;
b=(int)br.read();
if(Count==2)
System.out.println("The Multiplied Value is "+a*b);
}while(Count<2);
}

How to Get Input From User and Display Result

Hi ,
I need to get 2 inputs from user and to display it's Mutilple Value.
The Below Code is working fine to get 2 Input's from user,but it display a Junk value as a Result .How to
overcome this Problem. I need to display it's Mutilple(a*b) value of "a " and " b".
import java.io.*;
class Mul{
static int a=0;
static int b=0;
static int Count=0;
public static void main(String args[])throws IOException{
BufferedReader br =new BufferedReader(new InputStreamReader(System.in));
do{
a=(char)br.read();
Count++;
b=(char)br.read();
if(Count==2)
System.out.println("The Multiplied Value is "+a*b);
}while(Count<2);
}

Hi ,
I need to get 2 inputs from user and to display it's
Mutilple Value.
The Below Code is working fine to get 2 Input's from
user,but it display a Junk value as a Result .How
to
overcome this Problem. I need to display it's
Mutilple(a*b) value of "a " and " b".
import java.io.*;
class Mul{
static int a=0;
static int b=0;
static int Count=0;
public static void main(String args[])throws
IOException{
BufferedReader br =new BufferedReader(new
InputStreamReader(System.in));
do{
a=(char)br.read();This line will get you the ascii-value of the typed character.
This line will not get you the value typed in.
Try looking for Integer.parseInt()...
Count++;
b=(char)br.read();
if(Count==2)
System.out.println("The Multiplied Value is "+a*b);
}while(Count<2);

How to program shift register to read only when a new user is detected from user?

Hi,
I'm currently developing a program for position control in labview. The program is quite simple, whereby user will input the distance that he wants the table to be in the labview program, and labview will send signal to move a motor that will turn a ball screw to move a table horizontally to the targetted position. The criteria is that the profile of the motor depends on the distance it needs to move, whether a two-phase (acceleration and deceleration) or three-phase (acceleration, constant velocity, deceleration) to reach the target position.
The problem occurs when the user wants to enter a new position (second input) for the table, as the input by user is position the table needs to be but the input required to determine which profile the motor follows depends on the distance that the table will move to get to the targetted position. Therefore, I would need a function to store the input by user temporarily, and recall it only when a new input from user is detected. By this, I would be able to use the difference of the input (input [n+1] - input[n]) and feed it to determine which profile the motor follows and the input by user can be kept as the position he wants the table to travel to (to compare with encoder).
I thought of using shift registers to do this, but I am not able to make it to perform the deduction ([n+1] - [n]) only when it detects a new input. When i try using shift register, it travels to the targetted position, and one it reaches it will travel back to the original position. For example, when a user input 90, it means the table needs to move to point 90. As the shift register is initialized to 0, it will move to point 90 (90-0 = 90) but upon reaching 90, the shift register sends a signal of 90 (90-90 = 0) and the table returns to it's initial position.
Is there any way that I can delay the reading of shift register only when a new input is detected or is there another way for me to achieve what i want?
I've tried searching the discussion forum and ni website but couldn't find similar problems. Thanks for your help in advance.
Solved!
Go to Solution.

Hi,
I've managed to get what I needed by using a shift register + event structure as suggested by Adnan. However, I face another problem after implementing SR+event. I've attached two files, first the original program and second the updated program using SR + event. (it's only the jpg file as I've forgotten to save the labview program, will upload the program by tomorrow.
In the original program, I have an elapsed time that is able to run continuously when I run the program. In the updated program, my elapsed time don't seem to run continuously when I run the program (as shown by elapsed time indicator). I need the elapsed time to run continuously as a input to calculate my motor profile.
I suppose this is caused by the introduction of the event structure, will adding a case structure to wrap the event structure solve the problem or is there another way to get pass this. Appreciate if someone could drop me a pointer or two.
Thanks
Attachments:
Mar 16 - continuous elapsed time.png ‏12 KB
Mar 16 - elapsed time not continuous after introducing shift register + event structure.png ‏17 KB

How can i take input from user?

class input{
public static void main(String args[]){
int i,j,result;
//i want to take input here from user.
result=i+j;
System.out.println(result);
}

here's the code which takes input of i , j from user and adds it
<code>
public static void main(String[] args)
          int i=0;
          int j=0;
          String s = null;
          System.out.println("Enter value of 'i'");
          InputStreamReader isr = new InputStreamReader ( System.in );
          BufferedReader br = new BufferedReader ( isr );
          try
          s = br.readLine ();
          i=Integer.parseInt(s);
          System.out.println("Enter value of 'j'");
          isr = new InputStreamReader ( System.in );
          br = new BufferedReader ( isr );
          s = br.readLine ();
          j=Integer.parseInt(s);
          System.out.println("Enter value of 'i+j ='"+(i+j));
          catch(Exception e){}
</code>

Get input from user and create a file and run a script in command line.

Hi all,
i'm trying to get a input from user and write it into a file named alpe.jacl
To get multiple userinputs like address and jobtitle etc etc in the same single window.
and the code will save the inputs in alpe.jacl one by one in a new line like
nameis name
address russia
jobtitle dev
So i coded like below.
Though GUI for user input looks dull Its working fine.
Now I want this code to perform one more task which is the GUI will contain one more button INSTALL with OK and CALCEL .
and when after putting all inputs and creating the alpe.jacl file if someone clicks INSTALL it should start ./install.sh script present at the same folder which contains some unix shell commands.
Here am not able to figure out how to go further...
One more thing after all the inputs given when I am clicking on the OK button its closing the window instantly which i dont want. I want it like it should wait till someone press CANCEL to exit.
Please some one help me.
import javax.swing.*;
import java.io.*;
public class file
public static void main(String []args)throws IOException
FileWriter ryt=new FileWriter("alpe.jacl");
BufferedWriter out=new BufferedWriter(ryt);
JTextField wsName = new JTextField();
JTextField sName = new JTextField();
JTextField cName = new JTextField();
Object[] message = {    "Web Server Name:", wsName,"Server Name:", sName,"Cluster Name:", cName};
int answer = JOptionPane.showConfirmDialog(    null, message, "Enter values", JOptionPane.OK_CANCEL_OPTION);
if (answer == JOptionPane.OK_OPTION){    String webserver = wsName.getText();
String server = sName.getText();
String cluster = cName.getText();
out.write("set webservername " +wsName.getText()+"\n");
out.write("set ClusterName " +cName.getText()+"\n");
out.write("set ServerName " +sName.getText()+"\n");
out.close();
}}Thanks,
Ricky

Thanks a lot.
Is there any way through which i can assign a scroll bar to my panel.
As when the number of user inputs grows the GUI becomes more bulky and some of the fields are not showing up.
Cheers
_Ricky

How to update jTable from user input?

I create one jTable with 2 rows and 3 columns. the jtable colums contains deviceIP and Status. I am getting device IP from user input through jTextfield. so, when user enter IP and click add button, it must added in the jTable rows one by one.
how can I add it by user enter the IP. Also, I want to update the status column value by "UP" or "DOWN" by just getting string value from other function.
but, my problem is i need to update the correct IP status value to correct column (ie., I want to put IP 1(row 1) status to column 1 in status column list.
I don't know about jTable .
If any one have any examples please give me.

use
((DefaultTableModel)jTable.getModel()).addRow(Object[]);
Object[] is the array of row data values you want to insert;

Excel data read from users and upload in to Oracle DB using custom webpart

Hi Team,
I need to get the excel date from user using file upload control and read the data from the excel using custom webpart and validate the each rows whether having the values or not and need to upload the data to the oracle database.
Can you please let me know the best approach to read the data from excel using sharepoint custom webpart.
Thanks,
Mylsamy

Hi,
According to your post, my understanding is that you want to read excel data from the uploaded file and insert the data into Oracle Database.
The following way for your reference:
1.Create a Visual Web Part using Visual Studio.
2. Add an asp.net upload control into the .ascx file.
<div>
<asp:FileUpload ID="fileupload" runat="server" />
<asp:Button ID="btnUpload" runat="server" onclick="btnUpload_Click" Text="Upload" />
</div>
3. Add some logic methods into .ascx.cs file.
protected void btnUpload_Click(object sender, EventArgs e)
//read data and insert the data into Oracle database.
4.We can create a web service for adding data to Oracle database, then consume this web service in the visual web part.
More information:
http://msdn.microsoft.com/en-us/library/ff597539(v=office.14).aspx
http://manish4dotnet.blogspot.in/2013/02/upload-ans-read-excel-file-using-c.html
http://msmvps.com/blogs/windsor/archive/2011/11/04/walkthrough-creating-a-custom-asp-net-asmx-web-service-in-sharepoint-2010.aspx
Best Regards
Dennis Guo
TechNet Community Support

Setting default value read from user session, for an LOV in Query component

I want to set the default value of a field in VO that participates in a named view criteria and thereby in Query component. That field is configured with an LOV by mean of a view accessor. The values are Y and N and the corresponding display strings obtained from view accessor are true and false respectively.
I am able to set the default value by setting the value of the criteria item corresponding to that field in view criteria. I am setting the value as either Y or N and I am able to corresponding display string as per the view accessor, on the query component when it is rendered.
I want to read the defauilt value from the ADF BC user session and set it as default value. I tried setting the values as "adf.userSession.userData.usageFlag". Iam ensuring that the attribute usageFlag is set before the view activity that has the query component is invoked. But this is ending up showing no default value in the Query component when rendered.
Can any one let me know how to go about with this?

I made up your table since you didn't provide some example, but I'm sure this will give you the picture:
SQL> var run_type varchar2(1)
SQL> exec :run_type := 'A'
PL/SQL procedure successfully completed.
SQL> create table my_cycles as select level cycle_id
2                            ,      level cycle_status
3                            from   dual connect by level <= 5;
Table created.
SQL> select cycle_id
2 from   my_cycles
3 where case
4           when :run_type = 'D' and cycle_status = 1 then 1
5           when :run_type != 'D' and cycle_status in ( 2, 3 ) then 1
6         end = 1;
CYCLE_ID
         2
         3
2 rows selected.
SQL> exec :run_type := 'D';
PL/SQL procedure successfully completed.
SQL> /
CYCLE_ID
         1
1 row selected.
SQL>

How can i get input from user in Workflows

Hello professionals,
I'm new to SAP B1 Workflow, i have created some workflows and they all worked fine.
But, I am wondering, How can i get input from user?. For example, i want to display list of options to choose between them and route the workflow based on the selected option. I don't want to use the exclusive gateway and check for some conditions, i want to get input from user.
How can i do that?
Thanks in advance,
Kareem Naguib

Hi,
Please refer SAP help file:
http://help.sap.com/saphelp_sbo900/helpdata/en/b8/1f9a1197214254b79bcf8f93f9fff9/content.htm?frameset=/en/44/c4c1cd7ca22…
Thanks & Regards,
Nagarajan

Make System.in read input from a command prompt

How can i make System.in read input from a command prompt which is opened after program
is started. Please note that program starts without commad promt. Can u plz help?
sharmila

System.in DOES read from the command shell that you start the app in.
What you don't have is a prompt.
You should know about Java Almanac. There are code samples for simple things like I/O that everyone should know about. There's an example there to help you.
MOD

Reading inputs in console from user

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