我试图在一个数字中读取一年中第一季度的经纪人收入。我想确保不能输入0或更少但是当我输入0时它只是接受它并且不会抛出例外？ 我做错了什么？非常感谢任何帮助。
public void setQuarter1(double newQuarter1)
{
if ( newQuarter1 > 0)
quarter1 = newQuarter1;
else
throw new IllegalArgumentException("new quarter must be > 0.0");
}
好的，这是我的整个作业代码
import java.util.Scanner;
public class Broker {
//(a) declare instance variables
private String department, firstName, lastName;
private double quarter1, quarter2, quarter3, quarter4;
//(b) Access methods for instance variables
public void setDepartmentName(String newName)
{
department=newName;
}
public String getDepartment ()
{
return department;
}
//set and get methods for first name
public void setFirstName (String newFirstName)
{
firstName=newFirstName;
}
public String getFirstName ()
{
return firstName;
}
//set and get methods for last name
public void setLastName(String newLastName)
{
lastName=newLastName;
}
public String getLastName ()
{
return lastName;
}
//set and get methods for Quarter 1
public void setQuarter1(double newQuarter1)
{
if ( newQuarter1 > 0)
quarter1 = newQuarter1;
else
throw new IllegalArgumentException(
"new quarter must be > 0.0");
}
public double getQuarter1()
{
return quarter1;
}
//set and get methods for Quarter 2
public void setQuarter2(double newQuarter2)
{
quarter2 = newQuarter2;
}
public double getQuarter2 ()
{
return quarter2;
}
//set and get methods for Quarter 3
public void setQuarter3(double newQuarter3)
{
quarter2 = newQuarter3;
}
public double getQuarter3 ()
{
return quarter3;
}
//set and get methods for Quarter 4
public void setQuarter4(double newQuarter4)
{
quarter4 = newQuarter4;
}
public double getQuarter4 ()
{
return quarter4;
}
//(c) class variable annualbrokerage total and two access methods
private static double brokerageTotal;
public void setbrokerageTotal(double newBrokerageTotal)
{
newBrokerageTotal=brokerageTotal;
}
//(c) constructor to initialise instance variables department,firstname and lastname
public Broker (String dept, String first, String last )
{
department = dept;
firstName = first;
lastName = last;
}
// (d) constructor to initialise all instance variables from (a)
public Broker (String dept, String first, String last,double q1,double q2,double q3,double q4 )
{
department = dept;
firstName = first;
lastName = last;
quarter1 = q1;
quarter2 = q2;
quarter3 = q3;
quarter4 = q4;
}
// (e) no-argument constructor to initialise default broker instance
public Broker ()
{
department = null;
firstName = null;
lastName = null;
quarter1 = 0;
quarter2 = 0;
quarter3 = 0;
quarter4 = 0;
}
//(f) Method to read in quarters from user
public void readInQuarters ()
{
Scanner input = new Scanner(System.in);
System.out.println("Please enter Q1,Q2,Q3 and Q4 figures for broker:");
quarter1 = input.nextInt();
quarter2 = input.nextInt();
quarter3 = input.nextInt();
quarter4 = input.nextInt();
} //end of read in quarters method
// (g) getBrokerTotal Method to return total trades for 4 quarters
public double getBrokerTotal()
{
//code to calculate broker quarterly totals
double brokerTotal = quarter1 + quarter2 + quarter3 + quarter4;
return brokerTotal;
} //end of getBrokerTotal method
//(e) getBonus method to calculate brokers bonus
public double getBonus()
{
double bonusRate=0;
double bonus=0;
//bonus rate depending on department rate
if("Dublin"==department)
bonusRate=.12;
else if("London"==department)
bonusRate=.15;
else
bonusRate=.10;
bonus = (quarter1 + quarter2 + quarter3 + quarter4)*(bonusRate);
return bonus;
}
//(i) to string method for broker class
public String toString()
{
return String.format(" Name: "+ getFirstName()+"\n Surname: "+getLastName()+"\n Department: "+getDepartment()+"\n Total: "+getBrokerTotal()+"\n Bonus: "+getBonus()+"\n\n");
}//end of toString method
//(i) Static methods to read in broker array and output quarterly totals
//Quarter1 totals method
public static double getQuarter1Total (Broker[]brokerQuarter1Array)
{
double quarter1Total = brokerQuarter1Array[0].getQuarter1()+ brokerQuarter1Array[1].getQuarter1()+ brokerQuarter1Array[2].getQuarter1()+ brokerQuarter1Array[3].getQuarter1()
+ brokerQuarter1Array[4].getQuarter1() + brokerQuarter1Array[5].getQuarter1();
return quarter1Total;
}
//Quarter2 totals method
public static double getQuarter2Total (Broker[]brokerQuarter2Array)
{
double quarter2Total = brokerQuarter2Array[0].getQuarter2()+ brokerQuarter2Array[1].getQuarter2()+ brokerQuarter2Array[2].getQuarter2()+ brokerQuarter2Array[3].getQuarter2()
+ brokerQuarter2Array[4].getQuarter2() + brokerQuarter2Array[5].getQuarter2();
return quarter2Total;
}
//Quarter3 totals method
public static double getQuarter3Total (Broker[]brokerQuarter3Array)
{
double quarter3Total = brokerQuarter3Array[0].getQuarter3()+ brokerQuarter3Array[1].getQuarter3()+ brokerQuarter3Array[2].getQuarter3()+ brokerQuarter3Array[3].getQuarter3()
+ brokerQuarter3Array[4].getQuarter3() + brokerQuarter3Array[5].getQuarter3();
return quarter3Total;
}
//Quarter4 totals method
public static double getQuarter4Total (Broker[]brokerQuarter4Array)
{
double quarter4Total = brokerQuarter4Array[0].getQuarter4()+ brokerQuarter4Array[1].getQuarter4()+ brokerQuarter4Array[2].getQuarter4()+ brokerQuarter4Array[3].getQuarter4()
+ brokerQuarter4Array[4].getQuarter4() + brokerQuarter4Array[5].getQuarter4();
return quarter4Total;
}
// Static method to calculate total brokerage totals for all brokers
public static void setBrokerageTotal (Broker[] brokerTotalsArray)
{
double annualBrokerageTotal= brokerTotalsArray[0].getBrokerTotal() + brokerTotalsArray[1].getBrokerTotal()
+ brokerTotalsArray[2].getBrokerTotal() + brokerTotalsArray[3].getBrokerTotal() + brokerTotalsArray[4].getBrokerTotal() + brokerTotalsArray[5].getBrokerTotal();
}
// Static method to get the total bonuses for all brokers cobined
public static double getBrokerageBonus (Broker [] brokerageBonusTotalArray)
{
double totalBrokerageBonus = brokerageBonusTotalArray[0].getBonus()+ brokerageBonusTotalArray[1].getBonus()+ brokerageBonusTotalArray[2].getBonus()+ brokerageBonusTotalArray[3].getBonus()
+ brokerageBonusTotalArray[4].getBonus() + brokerageBonusTotalArray[5].getBonus();
return totalBrokerageBonus;
}
public static void main(String[]args)
{
//Part-B
///(a) create broker1 with the no argument constructor
Broker broker1=new Broker();
broker1.setDepartmentName("Dublin");
broker1.setFirstName("John");
broker1.setLastName("Wall");
broker1.setQuarter1(12);
broker1.setQuarter2(24);
broker1.setQuarter3(26);
broker1.setQuarter4(17);
System.out.print(broker1);
//(b) create broker2
Broker broker2 = new Broker("London","Sarah","May");
broker2.setQuarter1(8);
broker2.setQuarter2(11);
broker2.setQuarter3(7);
broker2.setQuarter4(9);
System.out.print(broker2);
//(c) create broker3
Broker broker3 = new Broker("London","Ruth","Lavin");
//call read in quarters method
broker3.readInQuarters();
System.out.print(broker3);
//(d) create broker4,broker5,broker6
Broker broker4=new Broker("Dublin","Conor","Smith",21,23,26,31);
Broker broker5=new Broker("Paris","Jerome","Duignan",14,14,17,18);
Broker broker6=new Broker("Paris","Patick","Bateman",23,24,26,35);
//(e) Create broker array
Broker[] brokers;
brokers=new Broker [6];
brokers[0]=broker1;brokers[1]=broker2;brokers[2]=broker3;brokers[3]=broker4;brokers[4]=broker5;brokers[5]=broker6;
//(f) Output second table
String[] headings ={"Dept","Firstname","Surname","Q1","Q2","Q3","Q4","Total","Bonus"};
//loop to print the headings
for (int i = 0; i < headings.length; i++)
{
System.out.print(headings[i]+" ");
}
//print a space under the headings
System.out.println(" \n");
//loop to print the main table plus format specifiers to align the text
for (int i = 0; i < 5; i++)
{
System.out.printf("%-7s %-13s %-11s %-6s %-6s %-6s %-6s %-10s %.1f \n\n",brokers[i].getDepartment(), brokers[i].getFirstName(),brokers[i].getLastName(),brokers[i].getQuarter1(),brokers[i].getQuarter2(),brokers[i].getQuarter3(),brokers[i].getQuarter4(),brokers[i].getBrokerTotal(),brokers[i].getBonus());
}
// console printout for quarterly totals
System.out.printf("%33s \n","Quarterly ");
System.out.printf("%29 %9s %6s %6s %6s %6s \n","Total ",getQuarter1Total(brokers),getQuarter2Total(brokers),getQuarter3Total(brokers),getQuarter4Total(brokers),getBrokerageBonus(brokers));
} //end of method main
} //end of class broker
ER
答案 0 :(得分：0)
您没有使用您的二传手。问题出在这里
public void readInQuarters () {
Scanner input = new Scanner(System.in);
System.out.println("Please enter Q1,Q2,Q3 and Q4 figures for broker:");
quarter1 = input.nextInt(); // <-- Use your setters!
quarter2 = input.nextInt();
quarter3 = input.nextInt();
quarter4 = input.nextInt();
// should be,
setQuarter1(input.nextInt()); // and so on... although I will point out, you should
// be reading double(s) apparently.
}
答案 1 :(得分：0)
Hello Friend我已经提出了一个建议，这个建议也在我们的项目中使用 在提交值之前调用此方法。如果返回true则更新数据另外显示mgs在验证方法中从调用更新
boolean validate() {
int c = Integer.parseInt(txtFieldSetupTopElevation.getText().toString().trim());
if (c <= 0) {
// Here use code for show msg error or information
// return true if value is greater than 0 other wise return else
return false;
}
}
和Sandeep