Question

所以我是Stack Overflow的新手，希望我正确地说出这个问题。我从课堂上得到了这个任务，并且完成了它，直到我的教授调整了一点任务。总而言之，我创建了2个类，它们可以相互协作，并将变量从另一个类调用到它被调用的类中。现在我的教授想要一个java文件，这意味着一个类文件。我不知道如何用两个代码将程序重写为一个类。

分配：

“（Location类）设计一个名为Location的类，用于在二维数组中定位最大值及其位置。该类包含存储最大值及其索引的公共数据字段row，column和maxValue。一个二维数组，其中row和column为int类型，maxValue为double类型。    编写以下方法，返回二维数组中最大元素的位置：

public static Location locateLargest（double [] [] a）

返回值是Location的实例。编写一个测试程序，提示用户输入二维数组并显示数组中最大元素的位置。这是样本运行：

输入数组的行数和列数：3 4   输入数组：   23.5 35 2 10   4.5 3 45 3.5   35 44 5.5 9.6   最大元素的位置在（1,2）
处为45

所以我用第一类编码完成了所有这些：

public class Location {

        int row;  //blue variable = class variable
        int column;
        double maxValue;
}

然后是在第二课程中调用程序的代码

import java.util .*;

public class TestLocation {

	public static void main(String[] args) 
	{
		Location mylocation;
		int row; 
		int column;
		double [][] numArray; //we can leave this blank
		Scanner Reading = new Scanner(System.in);
		
		System.out.println(" How many rows will you be entering?");
		row = Reading.nextInt(); //nextInt -what it reads will convert into a integer
		
		System.out.println(" How many columns will you be entering?");
		column = Reading.nextInt();
		
		numArray = new double [row][column];
		
		System.out.println("Enter the array please");
		
		for (int i = 0; i < row; i++)
		{
			for (int j = 0; j < column; j++)
			{
				numArray[i][j] = Reading.nextDouble();
				//i is the row and j is the column
			
			}
			
		}
		mylocation = locateLargest(numArray);
		
		int temp = (int)mylocation.maxValue; //this is to print out the difference between int and double(decimal)
		if (temp == mylocation.maxValue)
			System.out.println("Highest Number: " +(int)mylocation.maxValue); //(int forces to be an integer then the double it was, eliminate decimal places)
		else
			System.out.println("Highest Number: " +mylocation.maxValue); //print out with decimal
		System.out.println("Position: (" + mylocation.row+", " + mylocation.column +")");
		
		
		Reading.close();
	}
	
	
	
public static Location locateLargest(double[][] a)
		
		{
			
			Location mylocation = new Location(); //this is where we are going to store my information in
			mylocation.maxValue = a[0][0]; //this is the max value to the first number
			mylocation.row = 0;
			mylocation.column = 0;
			
			for (int i = 0; i < a.length; i++) //Length of the row; how many row there are
			{
				for (int j = 0; j < a[0].length; j++) //Length of a row; how many column in that row
					//we added array here in the second because we want of get the length of the second dimension
					//.length get the length of the current dimension , so a.length get the length of the first dimension
				{
					if (mylocation.maxValue < a[i][j] )
					{
						mylocation.maxValue = a[i][j];
						mylocation.row = i;
						mylocation.column = j;
					}
					
				}
				
			}
			
			return mylocation; 
			
		}

}

如何使用上面的赋值框中的新指令重新编程，这需要我将所有编码转换为一个class = 1 java文件？我几乎尝试了一切而无法得到我想要的结果。

Answer 1

一个java文件只允许一个公共类文件。从第一个java文件中删除public关键字，并将它们放在同一个文件中，第二个文件将起作用。

class Location {
    int row;  //blue variable = class variable
    int column;
    double maxValue;
}

需要帮助修复此Java类文件中的某些编码

1 个答案: