Java 我需要帮助找出我的代码有什么问题

我得到一些错误，说它找不到符号

import javax.swing.JOptionPane;

public class ShippingSales
{
    public static void main (String [] args)

{
    int weight,  miles;
    String temp;
    double shippingcharge, rate;

    shippingcharge = miles * rate;
    miles = 500;

    temp = JOptionPane.showInputDialog("Enter the weight of the package");
    weight = Interger.parseInt(temp);

    if (weight <= 2)
    {
        JOptionPane.showMessageDialog(null, "Your total amount is " + shipppingcharge);
        rate = 1.10;
    }

    if (weight > 2 && weight<= 6 )
    {
        JOptionPane.showMessageDialog(null, "Your total amount is " + shipppingcharge);
        rate = 2.20;
    }

    if (weight > 6 && weight<= 10)
    {
        JOptionPane.showMessageDialog(null, "Your total amount is " + shipppingcharge);
        rate = 3.70;
    }

    if (weight > 10)
    {
        JOptionPane.showMessageDialog(null, "Your total amount is " + shipppingcharge);
        rate = 3.80;
    }

}


}

这条线有什么不对劲吗

提示：拼写

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此外，您在变量引用中多次拼写错误shipping charge。

您在所有ShowMessage对话框中都使用了三个p，但该变量称为shippingcharge

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你拼错了整数，你用的是整数

哪些符号？如果编译器说找不到ShippingCharge。你只需要检查一下拼写是否正确——事实并非如此。INTEGER也是这样。

 Interger.parseInt(temp);