为什么会出现“ .class”预期错误？简单数组脚本 [英] Why am I getting a '.class' expected error? Simple Array script

问题描述

我的程序正在创建一个数组，并允许用户输入10个双精度数字。然后程序将按照从低到高的顺序对它们进行排序。我有以下内容，但在编译时收到.class预期错误。有什么想法为什么会这样？注意*我还不能编译它，所以我什至不知道这是否行得通。 *

My program is creating an array and allowing the user to input 10 double precision numbers. Then the program will sort them in order from lowest to highest. I have the following but receive .class expected error upon compiling. Any ideas on why this is happening? Note * I have not been able to compile this yet so I don't even know if this will work. *

import java.io.*;

public class ArrayDemo
{
    public static void main(String[] args) throws IOException
    {
        int i = 0;
        int j = 0;
        int temp = 0;
        double[] intValue = new double[10];
        String[] numbers = {"first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth"};
        int len = intValue.length[];

        BufferedReader dataIn = new BufferedReader (new InputStreamReader(System.in));

        for (i = 0; i < len; ++i)
            System.out.println("Enter the " + numbers[i] + " number");
        intValue[i] = Double.valueOf(dataIn.readLine());

        {

        for (j = 0; j < (len - 1) -i; j++)
            if (intValue[j] > intValue[j+1]) 
            {
                temp = intValue[j];
                intValue[j] = intValue[j+1];
                intValue[j+1] = temp;
            }

        for (i = 0; i < 10; i++);
        {
            System.out.println("Array after sorting in ascending order");
            System.out.println();
            System.out.println(intValue[i]);

        }

        }
    }
}

谢谢您的投入。 ：）

推荐答案

int temp = 0; 应该为 double temp = 0;

和

int len = intValue.length []; 应该为 int len = intValue.length;

和

for（i = 0; i <10; i ++）; 应该是表示（i = 0; i< 10; i ++）

示例

EDIT

import java.io.*;

public class Main
{
    public static void main(String[] args) throws IOException
    {
        int i = 0;
        int j = 0;
        int k = 0;
        double temp = 0;
        double[] intValue = new double[10];
        String[] numbers = {"first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth"};
        int len = intValue.length;

        BufferedReader dataIn = new BufferedReader (new InputStreamReader(System.in));

        for (i = 0; i < len; ++i) {
            System.out.println("Enter the " + numbers[i] + " number");
            intValue[i] = Double.valueOf(dataIn.readLine());
        }


        for (j = 0; j < len; j++)
        {
            for(k = 0; k < len; k++) {
                if (intValue[j] > intValue[k]) 
                {
                    temp = intValue[j];
                    intValue[j] = intValue[k];
                    intValue[k] = temp;
                }
            }
        }

        System.out.println("Array after sorting in ascending order");
        for (i = 0; i < 10; i++)
        {
            System.out.print(intValue[i] + ", ");

        }

    }
}

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