constructor ABC in class ABC cannot be applied to given types

Task: Create a variable that points to a object of class ABC. And make the object variable (i) =14, and then print it out from main method.

ERROR MESSAGE:
Attachment 4133

Code:

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class Prog1{
    public static void main(String[]args){
        ABC pointer;
        pointer=new ABC(14);

        System.out.println(pointer.i);
       
    }
}

class ABC {
    int i;
}

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Basically, that error means that you passed an invalid parameter.

at line 4: pointer = new ABC(14);

That is wrong.

class ABC has no constructor. A constructor is the first method that is called when the a new variable from that class is made.

Everytime you see the parentheses(), know that is a method.

Code:

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class ABC{
    int i; 

    public ABC(){
      //this is the constructor method.
    }
}

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But we still aren't done. In order to tell 'new ABC()' to pass the number 14, we have to do this:

Code:

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class ABC{
int i;

public ABC(int xyz){ //Now ABC can accept 1 integer value
i = xyz;  //This is how we pass that value back to i.

}

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My program is fixed, so thank you.
So it's not possible to send a value (14) directly to a objectvariable of class ABC without a constructor or other method?

Quote:

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Originally Posted by AeneasTroy

class ABC has no constructor.

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Slightly pedantic point, but it does have one.
A no arguments constructor provided by the compiler.

Quote:

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Originally Posted by AeneasTroy

A constructor is the first method that is called when the a new variable from that class is made.

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Also pedantic, but a constructor is not a method.

Not pedantic: correct terminology is important on a technical forum.

db

Quote:

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Originally Posted by DarrylBurke

Also pedantic, but a constructor is not a method.

Not pedantic: correct terminology is important on a technical forum.

db

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What is a constructor called?

A constructor is called a constructor. More here.

db