java 非法字符u3000,非法字符错误：'\ u200b'

I'm making an Asteroid Field for an Asteroid Game in my Object Oriented Programming class and I am receiving an illegal character error: '\u200b'. The issue seems to be happening on line 12. (The line between import java.awt.Point; and public class Asteroid extends PolyBlob)

/*

* University of Central Florida

* COP3330 - Spring 2016

* Author: Aundray Ortiz

*/

package asteroidfield;

import java.util.Random;

import blobzx.PolyBlob;

import blobzx.BlobUtils;

import java.awt.Point;

​

public class Asteroid extends PolyBlob

{

private static final Random random = new Random();

public Asteroid(int a, int b, double c)

{

super(-100,-100,c);

int sides = 5 + random.nextInt(5);

int[] x = new int[sides];

int[] y = new int[sides];

int going = 0;

double direct = 0;

double region = (Math.PI * 2)/sides;

for(int num = 0; num

{

going = 5 + random.nextInt(16);

direct = (num * region) + (Math.random() * region);

Point p = BlobUtils.rotatePoint(going, direct);

x[num] = p.x;

y[num] = p.y;

}

setPolygon(x, y);

setRate(c);

setDelta(a,b);

}

}

解决方案

\u200b is a "zero-width-space" in Unicode.

You should delete line 12 (the blank line), save the file, re-add the blank line and save again. using a simple text editor.

If that doesn't fix it delete lines 11 and 13 as well and recreate them.