I am trying to get character at 0 index in a string: So I use this function after I query contact, but I found strange result. Normal input & output: And this the strange input and result: So I try to debug this account and I found when app try to get character at 0 the return is ‘u202A’ 8234,
JSch: Is there a way to expose user environment variables to “exec” channel?
I am trying to run commands which uses local Linux logical paths like cat $test_dir/test.dat, but the logical path $test_dir (which is a user environment variable) is not available via ChannelExec. But when I use interactive ChannelShell, I am able to see the user variables and the commands run fine on the in…
String compression and decompression for data set that can be nested
My input is a compressed string of the format number[string] and the decompressed output form should be the string written number times. For example: My brute force approach in Java: Can I get some better approach with less cost? Answer We actually want to find the strings in [] and repeat it n times which is…
Java Regex First Name Validation
I understand that validating the first name field is highly controversial due to the fact that there are so many different possibilities. However, I am just learning regex and in an effort to help grasp the concept, I have designed some simple validations to create just try to make sure I am able to make the …
JUnitParams with Mockito
This could be a XY problem but I want to ask: I am using JUnitParams to be able to run my test method 10 times with different objects. The problem is that the injections don’t work (@Mock and @InjectMocks). I can use to mock the PersonService in the @Test method. But how do mock the “main” o…
Reverse Linked-List Recursive
I’ve traced through my code to reverse a linked-list using recursion, and I cannot find anything wrong with it, but I know it does not work. Can anyone please explain why? Answer Below is a working version of your code, added with some helping structures:
Java how to Modify IP Address that was input as a string
I have a program that will take a LAN IP provided, I then need to be able to modify just the last octet of the IP’s, the first 3 will remain the same based on what was input in the LAN IP Text Field. For example: User enter 192.168.1.97 as the LAN IP I need to be able to manipulate
Mockito anyListOf() List<List>
I’m using mockito-core:2.8.47 and Java 7 and want to use in a when and verify anyListOf or some other any method. My Problem is, if I just use anyList it says: The method name( int, List < List < String > >) in the type Y is not applicable for the arguments ( int, List < Object > ) How
Is it possible to mix –class-path and –module-path in javac (JDK 9)?
When I compile a module that depends on other modules I’ve compiled previously I have to specify the –module-path <directory> option. This makes modules I depend on visible. But at the same time I would also like to make some non-modular Jar files visible. However if don’t make them au…
Java with Beanshell to access fields and object with clean code
1). I know how to access the java fields and object in beanshell from my question Use java class fields in beanshell. However, it is not so clean way to implement as I need to first set the java variable in beanshell and then I can use it. However, in Jmeter it provides very clean way of using maps in