system.out Questions
5
Solved
When running:
public static void main(String... args) throws InterruptedException {
while (true) {
System.out.print(".");
Thread.sleep(200);
}
}
vs. when running same code from junit:
@Tes...
Thorp asked 22/5, 2016 at 8:36
2
Solved
How can I write an if statement inside the print statement?
public boolean checkEmpty()
{
if(array.isEmpty)
{
Sytem.out.println("The List is empty");
}
else
{
System.out.println("The list h...
Aleuromancy asked 25/10, 2013 at 21:42
11
Solved
How can I make Java print "Hello"?
When I type System.out.print("Hello"); the output will be Hello. What I am looking for is "Hello" with the quotes("").
Krystinakrystle asked 2/10, 2010 at 6:6
4
Solved
I'm trying to understand the difference, and benefits of using System.out.println() vs. return blah in a method.
It seems like System.out.println() is used to display static information, and retur...
Doukhobor asked 22/8, 2014 at 22:32
6
Solved
I've been told different things over my course on algorithms, and was wondering if I could get a definitive answer as to the time complexity of Java's System.out.println() command.
For example, wh...
Poppycock asked 8/9, 2013 at 5:5
3
Solved
On my OS X machine, the following line gives me a nice and easy way to track the state of my loops:
for (int index = 0; index < 100; index++)
for (int subIndex = index; subIndex < 100; subI...
Kutuzov asked 5/3, 2012 at 12:29
6
Solved
I have the following code:
class Example{
public static void main(String args[]){
System.out.println('1'+'1');
}
}
Why does it output 98?
Theta asked 25/1, 2020 at 7:51
3
Solved
I generated two matrices of 1000 x 1000:
First Matrix: O and #.
Second Matrix: O and B.
Using the following code, the first matrix took 8.52 seconds to complete:
Random r = new Random();
for (int i...
Vanwinkle asked 21/2, 2014 at 23:45
7
Solved
Let's say I want to print the number 100000000. At first sight it is difficult to tell how many millions this number is representing. Is it 10 million or 100 million? How can I make big numbers in ...
Johnsiejohnson asked 21/4, 2015 at 17:5
8
Solved
I am writing some tests for Javascript code and I need to dump some messages during the compile process when errors are encountered.
Is there any equivalent to Java's System.out.println() in Javas...
Voluminous asked 4/1, 2012 at 19:59
7
What is the difference between System.out.println() and System.err.println() in Java?
Priscian asked 2/7, 2010 at 5:23
3
A common problem with VM Java console output is that System.out and System.err are not usually synchronized properly, possibly because they are on different threads. This results in mixed up output...
Thumbsdown asked 14/6, 2013 at 18:12
2
I was going through the internal implementation of System.out.println().Though I understood how this is working but couldn't figure out :
Why they decided to use the System class in the fir...
Fumigate asked 29/11, 2018 at 10:40
9
Solved
I have worked with Java for a quite a long time, and I was wondering how the function System.out.print() works.
Here is my doubt:
Being a function, it has a declaration somewhere in the io packag...
Assay asked 15/6, 2013 at 7:37
2
Solved
I've been trying to serialize some Objects to System.out (for debugging). As soon as I call
final JsonSerializer serializer = new JsonSerializer();
serializer.serialize( System.out, myObj );
Syst...
Brutalize asked 7/4, 2014 at 5:15
13
Solved
How can I color Java output?
For example in C and other languages I can use ANSI-escape like \033[0m to do this. But in Java it doesn't work.
public static void main(String[] x) {
System....
Steamboat asked 19/9, 2009 at 16:14
4
Solved
I am just a newbie in Java. I was wondering the way System.out.println() is used. Out is a static field inside System class. The type of out is PrintStream. But when I saw the constructor of PrintS...
Craigcraighead asked 21/1, 2013 at 8:47
19
Solved
Is this static println function in out class from System namespace?
namespace System {
class out {
static println ...
}
How can I interpret this name? And where in JRE this function is defin...
Aloud asked 4/8, 2010 at 14:48
2
Solved
I am using the code:
System.out.println(null);
It is showing the error:
The method println(char[]) is ambiguous for the type PrintStream
Why doesn't null represent Object?
Yabber asked 31/3, 2016 at 5:58
1
I'm using Play 2.4 with Activator 1.3.7, and I'm noticing System.out.println doesn't always print in order to the console in the browser. It's pretty rare, but I caught it in action today. Here's t...
Vaulted asked 18/12, 2015 at 18:27
4
I am wondering how to get org.slf4j.Logger for System.out. I know this is not good, but I need it for testing purposes.
Thank you so much.
Aguila asked 22/12, 2011 at 13:6
10
Solved
I'm writing a program in Java that simulates gravity, and in it I have a bunch of log statements (to System.out). My program is running really slowly, and I think the logging might be part of the r...
Lepidosiren asked 27/3, 2012 at 2:14
1
Solved
I am trying to format in java using the printf statement like in this webpage: Click Here. But I just can't figure out what the purpose of the $ sign is. Can someone please explain this to me...
Trestlework asked 1/11, 2015 at 2:40
3
Solved
I noticed that any call to System.out.println() from a JAR file that hasn't been started by the command line (i.e. a Runnable JAR file started by user with double-click) won't open the console.
Aft...
Aquatic asked 29/8, 2015 at 15:45
3
Solved
Suppose I've created an executable jar from a code where I have used
System.out.println()
When we run the executable jar, there is no console. So, what happens to this line? How does java handl...
Wera asked 12/2, 2015 at 12:30
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