Linked Questions
26 questions linked to/from java.io.Console support in Eclipse IDE
1 vote
1 answer
319 views
Suppress System.in to System.out (prompt for password) [duplicate]
I want to prompt the user for a password in a Java code, and I'd rather not have the input printed to the screen for security reasons. I am aware of the class Console, but I would like to be able to ...
90 votes
13 answers
104k views
System.console() returns null
I was using readLine of BufferedReader to get input/new password from user, but wanted to mask the password so I am trying to use java.io.Console class. Problem is that System.console() returns null ...
54 votes
7 answers
56k views
Trying to read from the console in Java [duplicate]
I have just started learning Java with IntelliJ IDE. I know a bit C# so the logic makes some sense, however there is one thing so far I couldn't get over it. How do I read from the console? In C#, ...
16 votes
4 answers
13k views
How to use Scanner to read silently from STDIN in Java?
I want to make a Java program that reads a Password from STDIN silently. I mean, without outputting any pressed chars to the terminal and keeping it hidden from commandline history and the operating ...
4 votes
6 answers
67k views
Getting input from user in Console without using Scanner
I would like to know about other ways of getting input from users using other classes like BufferedReader,etc rather than using Scanner class. So, was there any other way of getting input from the ...
8 votes
5 answers
12k views
Console Input error java.lang.NullPointerException
I have tried code: import java.io.Console; public class Default { public static void main(String args[]) throws IOException { Console console = System.console(); String ...
6 votes
2 answers
6k views
System.console() returns null from Eclipse but fine with Command Prompt
When I use System.console from Eclipse Helios, it always returns null. However, when I use it directly from command line (i.e. compiling and executing a java source code manually from command prompt)...
0 votes
4 answers
18k views
How to start the java console when launching an application from Eclipse?
When I start a java application, the Java Console is started. But when I start a java application from Eclipse, the Java Console does not start on its own. How can I make it start also when I run an ...
3 votes
3 answers
4k views
Java console API
I tried the java.io.Console API using eclipse. My sample code follows. package app; import java.io.Console; public class MainClass { /** * @param args */ public static void main(...
2 votes
5 answers
5k views
Why doesn't the console prompt for an input?
import java.io.*; public class ConsoleDemo { public static void main(String[] args) { String str; Console con; con = System.console(); if (con == null) return; str = ...
1 vote
2 answers
2k views
Java Eclipse Taking Command Line Arguments Continously in Running Time
First of all, I read all related topics and none of them answered my question. I am developing a program in Java using Eclipse and I need to pass some arguments to the program continously after it ...
3 votes
1 answer
5k views
Why Console in Eclipse or IntelliJ always null? [duplicate]
Possible Duplicate: System.Console() returns null Code: public class Demo { public static void main(String[] args){ Console c = System.console(); if (c == null) { System.err....
1 vote
5 answers
3k views
Console class java
import java.io.Console; public class Talk { public static void main(String[] args) { Console c = System.console(); String pw; System.out.print("password: "); pw = ...
0 votes
5 answers
2k views
How can I associate a console with a Java application?
Since I've been learning Java, I've been able to create GUI programs. However, even simple "Hello World!" programs will not work, if they require a console. My research on the topic has lead me to the ...
3 votes
2 answers
3k views
No Java console output in Eclipse; works with PyDev
I have both a Java and a PyDev project in one workspace. When I run the PyDev project (either the main script with Run > Run As > Python Run or its associated unit test with Python unit-test), the ...