运算符不知道那里写错了

public class HelloWorld{

    public static void main(String[] args) {

int a=16;

double b=9.5;

String str1="hello";

String str2="imooc";

System.out.println("a等于b：" + (a == b));

System.out.println("a大于b：" + (a 〉b ));

System.out.println("a小于等于b：" + (a 〈b));

System.out.println("str1等于str2：" + (str1 ==  str2 ));

}

}