你如何在java中编码方向？

Question

你如何用Java编码方向？例如： 输入罗盘方向：N 输入罗盘角度：30 输入罗盘方向：W 代码应该输出330.我的代码到目前为止还没有输出任何东西（我还没完成，因为我想先找出我做错了什么）

{System.out.println("Do you have either - "
            + "1: A bearing OR 2: A direction? (Enter number 1 or 2)");}
    int number;
    Unit2LastAssignment In1 = null;
    number = In1.getInt();
    if (number == 2)
    {System.out.println("Enter Compass Direction: ");}
    String direction1;
    Unit2LastAssignment In2 = null;
    direction1 = In2.getString();
    {System.out.println("Enter Compass Angle: ");}
    int angle;
    Unit2LastAssignment In3 = null;
    angle = In3.getInt();
    {System.out.println("Enter Compass Direction: ");}
    String direction2;
    Unit2LastAssignment In4 = null;
    direction2 = In4.getString();

    {if (direction1 == "N")
    {System.out.println("360");}
    else if (direction1 == "E")
    {System.out.println("90");}
    else if (direction1 == "S")
    {System.out.println("180");}
    else if (direction1 == "W")
    {System.out.println("270");}
    else if (direction1 == "NE")
    {System.out.println("45");}
    else if (direction1 == "SE")
    {System.out.println("135");}
    else if (direction1 == "SW")
    {System.out.println("225");}
    else if (direction1 == "NW")
    {System.out.println("315");}

        else if (direction1 == "N" && direction2 == "E" && angle > 0 && angle <     45)
        {System.out.println(angle);}
    else if (direction1 == "E" && direction2 == "N" && angle > 0 && angle <     45)
    {int angle1;
    angle1 = 180 - angle;
    {System.out.println(angle1);}}