```import java.util.Scanner;

public class ComputeAngles {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);

// Prompt the user to enter three points
System.out.print("Enter three points: ");
double x1 = input.nextDouble();
double y1 = input.nextDouble();
double x2 = input.nextDouble();
double y2 = input.nextDouble();
double x3 = input.nextDouble();
double y3 = input.nextDouble();

// Compute three sides
double a = Math.sqrt((x2 - x3) * (x2 - x3)
+ (y2 - y3) * (y2 - y3));
double b = Math.sqrt((x1 - x3) * (x1 - x3)
+ (y1 - y3) * (y1 - y3));
double c = Math.sqrt((x1 - x2) * (x1 - x2)
+ (y1 - y2) * (y1 - y2));

// Compute three angles
double A = Math.toDegrees(Math.acos((a * a - b * b - c * c)
/ (-2 * b * c)));
double B = Math.toDegrees(Math.acos((b * b - a * a - c * c)
/ (-2 * a * c)));
double C = Math.toDegrees(Math.acos((c * c - b * b - a * a)
/ (-2 * a * b)));

// Display results
System.out.println("The three angles are " +
Math.round(A * 100) / 100.0 + " " +
Math.round(B * 100) / 100.0 + " " +
Math.round(C * 100) / 100.0);
}
}
```