Error squiggles are not showing for Java programs, and I am not able to execute the program when I click on the “Run Code” option.

When I used to code in Java, whenever I made an error, it would instantly show me the error with squiggles. When I clicked on the “Run Code” option, it would run the code. However, now I have to compile it using the javac command and run it using the java command. Only then does it show me errors, and if there are no errors, it runs. This is hard for me to do because every time I make an error, I have to compile and run it manually, which is taking a long time. I want it to work like how it used to.