Java 11 - Byte.MIN_VALUE 和 Byte.MAX_VALUE 在 IntelliJ IDEA CE 中显示错误

Question

I'm trying to get the minimum and maximum values of the byte data type printed but the Byte.MIN_VALUE & the Byte.MAX_VALUE are highlighted in red in the IDE. I'm using IntelliJ IDEA community edition. Would someone be able to help, please? Thanks in advance.

    public class Byte {
    public static void main(String[] args){

        byte myMinByteValue = Byte.MIN_VALUE;
        byte myMaxByteValue = Byte.MIN_VALUE;

        System.out.println("Byte Minimum Value = " + myMinByteValue);
        System.out.println("Byte Maximum Value = " + myMaxByteValue);
    }
}

Answer 1

You are giving Class Name as Byte so its refer the same class name. Change the class name to some other name.

public class Test {
    public static void main(String[] args){

        byte myMinByteValue = Byte.MIN_VALUE;
        byte myMaxByteValue = Byte.MIN_VALUE;

        System.out.println("Byte Minimum Value = " + myMinByteValue);
        System.out.println("Byte Maximum Value = " + myMaxByteValue);
    }
}

Answer 2

You have declared your own Byte class. (Bad idea...)

Within your Byte class, references to Byte are referring to >>this<< class, not to java.lang.Byte . But your Byte class does not declare MIN_VALUE or MAX_VALUE . Hence the compilation error... indicated by the red highlighting.

Solutions:

1. Change the name of your class. It is a bad idea to use a name for your class that is the same as the name of a standard class. If leads to various confusing compilation errors....

2. Use the qualified name for the standard class; ie change

    byte myMinByteValue = Byte.MIN_VALUE;

   to

    byte myMinByteValue = java.lang.Byte.MIN_VALUE;

Answer 3

"Byte" is a reverse word or keyword of java. You can't use any reserve word(keyword) as a class name or variable name. Change your class name.

class Test{
    public static void main(String[] args){

        byte myMinByteValue = Byte.MIN_VALUE;
        byte myMaxByteValue = Byte.MIN_VALUE;

        System.out.println("Byte Minimum Value = " + myMinByteValue);
        System.out.println("Byte Maximum Value = " + myMaxByteValue);
    }
}