Question

这是代码的一部分但是当我正在执行时我得到了错误该计划是关于线性编程抱歉我的英语，或愚蠢的问题

“错误：无法从静态上下文引用非静态方法get_total_profit（String）

output = get_total_profit(ip1); 在输出^ 1错误“

import java.io.*;
import java.lang.*;
import java.util.*;
import java.text.DecimalFormat;

public class CandidateCode {

 String get_total_profit(String input1) {
    String[] inputs = input1.split(",");
    // Piece of farm land in square kilometer
    float L = Float.valueOf(inputs[0]);
    // Fertilizer in kg
    float F = Float.valueOf(inputs[1]);
    // Insecticide in kg
    float P = Float.valueOf(inputs[2]);
    // Fertilizer required in kg for square kilometer of Wheat
    float F1 = Float.valueOf(inputs[3]);
    // Insecticide required in kg for square kilometer of Wheat
    float P1 = Float.valueOf(inputs[4]);
    // Fertilizer required in kg for square kilometer of Rice
    float F2 = Float.valueOf(inputs[5]);
    // Insecticide required in kg for square kilometer of Rice
    float P2 = Float.valueOf(inputs[6]);
    // Selling price of wheat per square kilometer
    float S1 = Float.valueOf(inputs[7]);
    // Selling price of rice per square kilometer
    float S2 = Float.valueOf(inputs[8]);

    // Result Variables
    float totalRiceInsecUsed = 0f;
    float totalRiceFertUsed = 0f;
    float totalWheatInsecUsed = 0f;
    float totalWheatFertUsed = 0f;
    float areaOfWheat = 0.00f;
    float areaOfRice = 0.00f;
    float amount = 0.00f;

    while (true) {
        if ((L == areaOfRice + areaOfWheat)
                || P == totalRiceInsecUsed + totalWheatInsecUsed
                || F == totalRiceFertUsed + totalWheatFertUsed || F2 == 0
                || F1 == 0 || P2 == 0 || P1 == 0) {
            break;
        }

        float calRiceProfit = Math.min(F / F2, P / P2) * S2;
        float calWheatProfit = Math.min(F / F1, P / P1) * S1;

        if (calRiceProfit > calWheatProfit) {
            float areaInsecUsed = P / P2;
            float areaFertUsed = F / F2;
            if (areaInsecUsed > areaFertUsed) {
                L = L - areaFertUsed;
                F2 = 0;
                totalRiceFertUsed = totalRiceFertUsed + F2;
                areaOfRice = areaOfRice + areaFertUsed;
                amount = amount + areaFertUsed * S2;
            } else if (areaInsecUsed < areaFertUsed) {
                L = L - areaInsecUsed;
                P2 = 0;
                totalRiceInsecUsed = totalRiceInsecUsed + areaInsecUsed;
                areaOfRice = areaOfRice + areaInsecUsed;
                amount = amount + areaInsecUsed * S2;
            }
        } else {
            float areaInsecUsed = P / P1;
            float areaFertUsed = F / F1;
            if (areaInsecUsed > areaFertUsed) {
                L = L - areaFertUsed;
                F1 = 0;
                totalWheatFertUsed = totalWheatFertUsed + F1;
                areaOfWheat = areaOfWheat + areaFertUsed;
                amount = amount + areaFertUsed * S1;
            } else if (areaInsecUsed < areaFertUsed) {
                L = L - areaInsecUsed;
                P1 = 0;
                totalWheatInsecUsed = totalWheatInsecUsed + areaInsecUsed;
                areaOfWheat = areaOfWheat + areaInsecUsed;
                amount = amount + areaInsecUsed * S1;
            }
        }

    }
    DecimalFormat df = new DecimalFormat();
    df.setMaximumFractionDigits(2);
    df.setMinimumFractionDigits(2);
    return df.format(amount) + "," + df.format(areaOfWheat) + ","
            + df.format(areaOfRice);
}
}

Answer 1

当您尝试使用非静态方法时，会发生此错误。我不知道你的其余代码，但似乎你试图用你的main方法调用（非静态）get_total_profit操作？

有两种可能性：一方面，您可以将get_total_profit更改为static（您可能不想要）或者另一方面，您可以在ip1类中创建一个函数，而不带参数“this”。

非静态方法不能从静态上下文中引用

1 个答案: