Ho provato a rinominare Rectangle in Rettangolo ma il risultato è lo stesso:

import java.awt.Rectangle;

public class Rectangle {
public static void main(String[] args) {
Rettangolo box = new Rettangolo(5, 10, 20, 30);

//sposta il rettangolo
box.translate(15,25);

//visualizza informazioni sul rettangolo traslato
System.out.print("x: ");
System.out.println(box.getX());
System.out.println("Excepted: 20");

System.out.print("y: ");
System.out.println(box.getY());
System.out.println("Excepted: 35");
}
}




errore visualizzato:

init:
Deleting: C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\build\built-jar.properties
deps-jar:
Updating property file: C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\build\built-jar.properties
Compiling 1 source file to C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\build\classes
C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\src\rectangle\Rectangle.java:19: Rectangle is already defined in this compilation unit
import java.awt.Rectangle;
C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\src\rectangle\Rectangle.java:23: cannot find symbol
symbol : class Rettangolo
location: class Rectangle
Rettangolo box = new Rettangolo(5, 10, 20, 30);
C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\src\rectangle\Rectangle.java:23: cannot find symbol
symbol : class Rettangolo
location: class Rectangle
Rettangolo box = new Rettangolo(5, 10, 20, 30);
3 errors
C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\nbproject\build-impl.xml:603: The following error occurred while executing this line:
C:\Users\Aspire\Documents\NetBeansProjects\Rectang le\nbproject\build-impl.xml:245: Compile failed; see the compiler error output for details.
BUILD FAILED (total time: 1 second)