比较java

Question

我正在使用我的＆＃39; CsvReader＆＃39;正在阅读csv文件。像这样：

public class CsvReader {        
    public static void main(String[] args) {            
        Map<String,Employee> empl = new HashMap <String,Employee>();
        String csvFile= "C:/Users/rapurohi/Desktop/employee.csv";
        BufferedReader br=null;
        String line= "";
        String csvSplitBy=",";

        try{                
            br=new BufferedReader(new FileReader(csvFile));
            while ((line =br.readLine())!=null){

                String [] employee=line.split(csvSplitBy);
                Employee e=new Employee(employee[0], employee[1], employee[2]);
                empl.put((employee[0]),e);
                System.out.println("Employee[id="+employee[0]+"name="+employee[1]+"salary="+employee[2]+"]" );
            }               
       }catch (FileNotFoundException|IOException e){
            e.printStackTrace();
       }

        }finally{
            if(br!=null){
                try{
                    br.close();
                }catch(IOException e){
                e.printStackTrace();
                }
            }
        }    
    }
}

使用的csv我看起来像这样：

empid,name,salary
"456","John","4000"
"457","James","5000"
"458","Jack","3000"
"459","Jenny","6000"

员工的dataVO看起来像

包com.cg.dto;

公共类员工{

String empId;

String empName;

String empSalary;

public String getEmpId（）{

return empId;

}

public void setEmpId（String empId）{

this.empId = empId;

}

public String getEmpName（）{

return empName;

}

public void setEmpName（String empName）{

this.empName = empName;

}

public String getEmpSalary（）{

return empSalary;

}

public void setEmpSalary（String empSalary）{

this.empSalary = empSalary;

}

public Employee（String empId，String empName，String empSalary）{

超级（）;

this.empId = empId;

this.empName = empName;

this.empSalary = empSalary;

}

我需要找到最高工资并将该条目写入Csv文件作为输出。

Answer 1

假设您只需要帮助找到最高工资，这里有一个简单的例子：

int maxSal = 0;
Employee highestPayedEmployee = null;
for (Employee employee : empl.values()) {
    if(employee.getSalary() > maxSal){
        maxSal = employee.getSalary();
        highestPayedEmployee = employee;
    }
}

这假设您的Employee类有一个getSalary（）方法，该方法将薪水作为数字返回。

如果需要，您可以将字符串转换为数字：

Integer.parseInt(salaryString);