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Java

Posted by victor ghosh
victor ghosh
724 Points

Help using Console on Eclipse

I have made a mad libs on the workspace here and it works but when I move it to Eclipse I cannot type into the console... When I run it I get the error "Exception in thread "main" java.lang.NullPointerException at TestPackage.TestClass.main(TestClass.java:14)" Please help me by saying how or if I can communicate to the console on Eclipse like I do here for things such as "javac" and "clear" and jShell

Jeremy Hill
Jeremy Hill
29,567 Points

In Eclipse you don't do console.printf like you do on treehouse. You can use the Scanner class.

// at the very top type in your import
import java.util.Scanner;

//next inside the class type: 

Scanner input = new Scanner(System.in);  // instantiated Scanner object here
// now to get input from the user you can type:

String string = "";
System.out.print("Type in something: ");
string = input.next(); // using object of Scanner here
System.out.printf("\nYou said:  %s.", string);

You might be able to set up the Console object to print to the console in Eclipse but I didn't have much luck with it. I haven't coded in java in a while but hopefully this helps.