Initialize your variable with an expression that evaluates to a double rather than an int: Otherwise the expression is done using integer arithmetic (which ends up truncating the result). That truncated result then gets converted to a double.
I am supplied with a jks keystore named ABCC_client.store. When I import this keystore to cacerts and try connecting it says No such Algorithm error. PFA the stacktrace But if I use this keystore independently i.e without adding it to cacerts it works. Some googling led to me to http://joewlarson.com/blog/2009/03/25/java-ssl-use-the-same-password-for-keystore-and-key/ which says that password might … Read more
You’re invoking the method with the class, but you need an instance of it. Try this:
You can’t use array subscripts: [], to index into a String, and both hidden and original are Strings. You can instead use original.charAt(i) to read a character at an index. As for writing a character at an index: java Strings are immutable, so you can’t change individual characters. Instead make hidden a StringBuilder, or simply … Read more
Use a while loop above input line as: And, use if condition to break. Also, condition for leap year is wrong in your code. It should be: PS: As in comments, I’ll give a complete code:
After quick searching around I assume you’re using DrJava and its Interactions Pane. You don’t need those parentheses in the run command. Try run Main customer.dat smartphone.dat instead. That will run the main method of class Main with arguments customer.dat and smartphone.dat Source
Note that if someApi() returns type Integer the only possibilities of something returned are: an Integer null In which case you can:
The problem is most likely that your application is using a relative pathname. As @BalusC says, relative pathnames can be problematic. But IMO, he goes way too far when he says “[y]ou should never use relative paths in java.io stuff”. When an application opens a file using (for example) the FileInputStream(File) constructor, relative pathnames are … Read more
This has really puzzled me for a while but this is what I found in the end. When you call, sc.close() in first method, it not only closes your scanner but closes your System.in input stream as well. You can verify it by printing its status at very top of the second method as : … Read more
You can use Scanner with System.in. E.g.