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How can I read input from the console using the Scanner class in Java?
...nt();
To retrieve a username I would probably use sc.nextLine().
System.out.println("Enter your username: ");
Scanner scanner = new Scanner(System.in);
String username = scanner.nextLine();
System.out.println("Your username is " + username);
You could also use next(String pattern) if you want m...
How to print out all the elements of a List in Java?
I am trying to print out all the elements of a List , however it is printing the pointer of the Object rather than the value.
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How do I write stderr to a file while using “tee” with a pipe?
I know how to use tee to write the output ( STDOUT ) of aaa.sh to bbb.out , while still displaying it in the terminal:
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Sending HTTP POST Request In Java
...n;
http.setRequestMethod("POST"); // PUT is another valid option
http.setDoOutput(true);
We then need to state what we are going to send:
Sending a simple form
A normal POST coming from a http form has a well defined format. We need to convert our input to this format:
Map<String,String> ...
How to use int.TryParse with nullable int? [duplicate]
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You can't do this without using another variable, unfortunately - because the type of out arguments has to match the parameter exactly.
Like Daniel's code, but fixed in terms of the second argument, trimming, and avoiding comparisons with Boolean...
“PKIX path building failed” and “unable to find valid certification path to requested target”
... twitter4j library for my java project. On my first run I got an error about certificate sun.security.validator.ValidatorException and sun.security.provider.certpath.SunCertPathBuilderException . Then I added twitter certificate by:
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How to write loop in a Makefile?
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The following will do it if, as I assume by your use of ./a.out, you're on a UNIX-type platform.
for number in 1 2 3 4 ; do \
./a.out $$number ; \
done
Test as follows:
target:
for number in 1 2 3 4 ; do \
echo $$number ; \
done
produces:
1
2
3
4
For bigge...
Func with out parameter
Can I pass a method with an out parameter as a Func?
4 Answers
4
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Create directories using make file
... = mkdir -p
.PHONY: directories
all: directories program
directories: ${OUT_DIR}
${OUT_DIR}:
${MKDIR_P} ${OUT_DIR}
This would have to be run in the top-level directory - or the definition of ${OUT_DIR} would have to be correct relative to where it is run. Of course, if you follow the ...
How to convert/parse from String to char in java?
...ns.charAt(5);//Gives You:: Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 5
Here is a full script:
import java.util.Scanner;
class demo {
String accNo,name,fatherName,motherName;
int age;
static double rate=0.25;
static double bal...