While executing my program in java, I encountered an error saying SunCertPathBuilderException. How can I deal with this exception since it’s hindering the execution of the whole program? How can I fix this error permanently?

How can I change the version of my Java already installed in my MAC OS system? Can you please provide me the steps for the same? Since I am facing issues while trying to update the same

I tried installing Java 7 on my MAC and after getting installed an error occurred while updating it for eclipse. As I entered the JDK configuration an error was received which says build path entry missing. How can I fix this issue?

While trying to compile my program in command prompt I used the command javac and the system is not able to compile that code. The error comes as javac is not a recognized command. What should I do to solve this error?

While using my JDK I attempted to start my applet, but as I gave the command to execute it, an error occurred saying “application blocked by java security” in a pop up of Java application blocked. How can I resolve this error?

consider: static constexpr unsigned num_points {7810}; std :: array <double, num_points> axis; for (int i = 0; i <num_points; ++ i) {Axis [i] = 180 + 0.1 * i;} The axis is a constant at the class level. I want to avoid initializing it like any other global variable. Can it be done at compile time?

How effective are Python resources (python, I think) in allocating a newly created instance of a class? I have a situation where I have to instantiate a node class millions of times to create a tree structure. Each of the node objects must be compact and contain only a few numbers and references to the parent and child nodes.

The following error is displayed when I open the create-react-app with npm start. I'm new to React and have had no problem using the command line to create a new app in the last few days. I tried to start npx, start npm, and reinstall npm for the updated version. Compilation failed ./src/index.css [/index.css] BrowserslistError: Unknown browser query `android all`. You may be using an old navigation list or a typo in a query. on Array.reduce (<anonymous>) on Array.some (<anonymous>) on Array.filter (<anonymous>)

I have a list of channels like: List <String> locations = Arrays.asList ("US: 5423", "US: 6321", "CA: 1326", "AU: 5631"); And I want to convert Map <String, List <String >> like this: AU = [5631] CA = [1326] US = [5423, 6321] How can I do that?

Due to a bug, I just discovered that this code works well with Visual Studio 17 and probably also with other compilers. Now I am curious to know why? #include <iostream> #include <string> std :: string foo () { returns nullptr; }int main () { car s = foo (); std :: cout << s << std :: endl;} I guess it’s because the c’tor std:: basic_string can be called with a * character, implicitly converting ptr to std :: string (with NULL as argument, then poof). Am I on the right track?