新手 输入判断 if(judge!="0")?报错

我写了个………

我是想让用户输入题目的对与错来判断，但是无论输入什么，程序总是执行 这一行

System.out.println("只只只    输出……");

  纠结啊

if(judge!="0")

if(judge!="0"){//错误
			System.out.println("只只只    输出……");
			}else{//正确
				System.out.println(" 输出……");
			}
全部代码在下面		}

package hulande;
import java .io.*;
public class run {
	public  static  void main(String[] args) throws IOException
	{   
		String [] question = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18"};

		System.out.println("正确请按enter直接跳过  ；");
		System.out.println("错误请按   0  后回车");
		for( int i=0;i<=18;i++){
			//String [] question = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18……………………！！！结束！！！"};
			System.out.println(question[i]);
			//输入
		InputStreamReader reader=new InputStreamReader(System.in);
		BufferedReader input=new BufferedReader(reader);
		String judge = input.readLine();
		
		if(judge!="0"){//错误
			System.out.println("只只只    输出……");
			}else{//正确
				System.out.println(" 输出……");
			}
		}
	
		
	}
	
}