Java 标记“”上的语法错误<=&引用；，删除此令牌

我正在为飓风规模创建一个程序，它给我带来了问题。所有错误都发生在else if行上。我们将不胜感激。代码如下：

import java.util.Scanner;

public class hurricaneScale {
    public static void main(String[]args) {
    Scanner in = new Scanner(System.in);
    System.out.print("Please enter the wind speed (in mph):");
    double windSpeed = in.nextln();

    if (windSpeed < 39) {
      System.out.print("      Category          Wind Speed   Storm Surge   Damage Potential");
      System.out.println("Tropical Depression   < 39 mph         -            Minimal    ");
    } 
    else if (windSpeed >= 39 && <=73) {
      System.out.print("    Category           Wind Speed   Storm Surge   Damage Potential");
      System.out.println("Tropical Storm      39 - 73 mph        -            Minimal    ");
    } 
    else if (windSpeed >= 74 && <=95) {
      System.out.print("   Category             Wind Speed   Storm Surge   Damage Potential");
      System.out.println("Hurricane 1          74 - 95 mph   4.0' - 5.0'   Minimal to extensive");
    } 
    else if (windSpeed >= 96 && <=110) {
      System.out.print("   Category           Wind Speed   Storm Surge   Damage Potential");
      System.out.println("Hurricane 2        96 - 110 mph   6.0' - 8.0'      Moderate    ");
    } 
    else if (windSpeed >= 111 && <=130) {
      System.out.print("   Category          Wind Speed      Storm Surge    Damage Potential");
      System.out.println("Hurricane 3      111 - 130 mph     9.0' - 12.0'       Extensive    ");
    } 
    else if (windSpeed >= 131 && <=155) {
      System.out.print("   Category          Wind Speed      Storm Surge        Damage Potential");
      System.out.println("Hurricane 4      131 - 155 mph    13.0' - 16.0'            Extreme    ");
    } 
    else if (windSpeed > 155) {
      System.out.print("   Category        Wind Speed      Storm Surge      Damage Potential");
      System.out.println("Hurricane 5      > 155 mph         > 18.0'           Catastrophic ");
    }
  }
}

import java.util.Scanner；
公共级飓风等级{
公共静态void main（字符串[]args）{
扫描仪输入=新扫描仪（系统输入）；
系统输出打印（“请输入风速（以mph为单位）：”；
双风速=in.nextln（）；
如果（风速<39）{
系统输出打印（“类别风速风暴潮损害可能性”）；
系统输出打印（“热带低压<39英里/小时-最小”）；
} 
否则如果（风速>=39&&=74&&=96&&=111&&&=131&&155）{
系统输出打印（“类别风速风暴潮损害可能性”）；
系统输出打印（“飓风5>155英里/小时>18.0'灾难性”）；
}
}
}

以下语法无效：

else if (windSpeed >= 39 && <=73)

---

else如果（风速>=39&&&39&&windSpeed以下语法无效：

else if (windSpeed >= 39 && <=73)

else if（windSpeed>=39&&=39&&windSpeed您需要将
windSpeed
变量添加到所有if条件中。如下所示

windSpeed >= 39 && windSpeed <=73

windSpeed>=39&&windSpeed=39&&p>您需要的是将
windSpeed
变量添加到所有if条件中。如下所示

windSpeed >= 39 && windSpeed <=73

windSpeed>=39&&windSpeed=39&&code>windSpeed>=39&&windSpeed
windSpeed>=39&&windSpeed非常感谢！感谢您的帮助。非常感谢！感谢您的帮助。