我需要帮助纠正我的蓝代码

import java.util.Scanner; 
    /** 
    * Write a description of class code here. 
    * 
    * @author (your name) 
    * @version (a version number or a date) 
    */ 
    public class code 
    { 
     public static void main(String args []) 
     { 
      { 
       docreditcard(); // calls functions 
      } 
      { 
       public static void docreditcard() 
      } 
      { 
       float preb = 0; 
       float add = 0; 
       float inter = 0; 
       float newb = 0; 
       float minp = 0; 

       preb = getPreviousB(); 
       add = getAdditional(); 
       inter = getInterest(preb,add); 
       newb = getNewb(preb,add,inter); 
       minp = getMinpay(newb); 

      } 
      public static float getPreviousB() 
      { 
       Scanner cd = new Scanner(System.in); 
       System.out.print("Enter previous balance"); 
       return cd.nextFloat(); 
      } 
      public static float getAdditional() 
      { 
       Scanner cd = new Scanner(System.in); 
       System.out.print("Enter total new charges"); 
       return cd.nextFloat(); 
      } 
      public static float getInterest(float preb,float add) 
      { 
      float interest = 0; 
      if(preb == 0) 
      { 
       interest = 0; 
       return interest; 
      } 
      else 
      { 
       interest = (preb + add)*0.020; 
       return interest; 
      } 
     } 

     public static float getNewb(float preb,float add,float inter) 
     { 
      float newbalance = 0; 
      newbalance = (preb + add + interest); 
      return newbalance; 
     } 

     public static float getMinpay(float newb) 
     { 
      float minimal = 0; 
      if(newbalance < 50) 
      { 
       minimal = newbalance; 
       return minimal; 
      } 
      else if(newbalace >= 50 && newbalance <= 300) 
      { 
       minimal = 50; 
       return minimal; 
      } 
      else 
      { 
       minimal = (newbalance)*.020; 
       return minimal; 

      } 
     } 
     System.out.println("CS International Card Statement"); 
     System.out.println("====================\n"); 
     System.out.println("Previous Balance:\t $%.2f%n",preb); // prints 
     System.out.println("Additional Charges:\t $%.2f%n",add); 
     System.out.println("Interest:\t\t$%.2f%n",inter); 
     System.out.println("\nNew Balance:\t\t$%.2f%n",newb); 
     System.out.println("Minimum Payment:\t$%.2f%n",minp); 
    } 
    }

//程序应该为用户输入以前的余额和全部新的费用。然后，应计算利息，新的平衡（前一资产负债+附加费用+利息）和最低工资。如果之前的余额为0，利息为0，否则，兴趣是前一资产负债和额外费用的20％。对于最低工资，如果新的平衡小于50，它等于最小的付出，否则，如果50和300之间，最低工资是50，如果高，那么最小的付出是新的平衡的20％我需要帮助纠正我的蓝代码

来源

2017-08-30 c.m

我解决不了错误您的程序，但我能够让我自己的版本吧。

import java.util.Scanner;

类代码 {

public static void main(){ 
    Scanner sc = new Scanner(System.in); 
    System.out.println("enter previous balance and total new charges"); 
    double pbal = sc.nextDouble(); 
    double tnc = sc.nextDouble(); 
    double nbal,interest,mp=0.0; 

    if(pbal == 0){ 
     interest = 0.0; 
     nbal=pbal+ tnc; 
    } 
    else{ 
     interest = (pbal+tnc)*0.2;//0.2=20/100 
     nbal=pbal + interest + tnc; 
    } 
    if(nbal<50){ 
     mp=nbal; 
    } 
    if(nbal>50 && nbal<300){ 
     mp=50; 
    } 
    if(nbal>300){ 
    mp=nbal *0.2; //0.2=20/100 
    } 
    System.out.println("old balance" + pbal + " " + "total new charges" + tnc); 
    System.out.println("new balance" + nbal + " " + "interest" + interest + " " + "minimal pay" + mp); 

}

}

希望这有助于。

来源

2017-10-21 08:31:45 Hans

我需要帮助纠正我的蓝代码

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