I’m working on a Java project and when I try to execute it, I receive a “java.lang.NullPointerException” error message.
public class MyClass {
private String myString;
public MyClass(String myString) {
this.myString = myString;
}
public void printMyString() {
System.out.println(myString.length());
}
public static void main(String[] args) {
MyClass myObject = new MyClass("Hello, world!");
myObject.printMyString();
}
}
When I attempt to execute this code, I receive the following error message:
Exception in thread "main" java.lang.NullPointerException
at MyClass.printMyString(MyClass.java:8)
at MyClass.main(MyClass.java:14)
I’m not sure why this error notice is appearing or how to resolve it. Can you assist me in troubleshooting this issue? I tried reading this article but couldn’t comprehend it well, and the outcome was not what I had hoped for. Could you please help me?