if 语句的非法表达式开头

Question

我不确定 if 语句中的错误在哪里，感谢任何帮助。

导入 java.util.Scanner; 公共类Exercise4P94 {

public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    int carNum;
    boolean chck;
    do {
        chck = true;
        System.out.println("Enter the Car Model Number: ");
        carNum = input.nextInt();

        if (carNum == 119 || carNum == 179 || carNum >== 189 && carNum <== 195 || carNum == 221 || carNum == 780){
            System.out.println("Your car is defective and must be repaired");
        } else if (!(carNum == 119 || carNum == 179 || carNum >= 189 && carNum <= 195 || carNum == 221 || carNum == 780)){
            System.out.println("Your car is not defective");
        } else {
            System.out.println("Please enter a valid car model number");
            chck = false;
        }
    } while (chck);
}

}

Answer 1

在大于/小于号之后不需要两个等号

 carNum >= 189 && carNum <= 195