[英]Problems Printing out a Concatenated String in Java
提示用戶逐行輸入員工數據。 我選擇掃描整行,然后將每條數據分成一個String數組(以空格分隔)。 我創建了變量fullName並連接了雇員的名字和姓氏,但是當我打印出代碼時,它僅顯示姓氏。 我已經進行了大約三個小時的故障排除,但是沒有發現任何語法或邏輯錯誤,為什么不打印全名?
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import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;
/**
* Employee Record Class
*
* @Theodore Mazer
* @version 9/8/15
*/
public class EmployeeRecord
{
ArrayList<String> names = new ArrayList<String>();
ArrayList<String> taxIDs = new ArrayList<String>();
ArrayList<Double> wages = new ArrayList<Double>();
private String employeeId = "%03d";
private String taxID;
private double hourlyWage = 0.0;
public ArrayList<String> getNamesArrayList(){ //getter method for employee names
return names;
}
public ArrayList<String> getTaxIdsArrayList(){ //getter method for tax IDs
return taxIDs;
}
public ArrayList<Double> getWagesArrayList(){ //getter method for hourly wages
return wages;
}
public void setEmployeeData(){ //setter method for employee data entry
Scanner scan = new Scanner(System.in);
String firstName = "";
String lastName = "";
String info = "";
System.out.println("Enter each employees full name, tax ID, and hourly wage pressing enter each time. (Enter the $ key to finish)");
while(!(scan.next().equals("$"))){
info = scan.nextLine();
String[] splitString = info.split(" ");
String fullName = "";
firstName = splitString[0];
lastName = splitString[1];
fullName = firstName + " " + lastName;
double hWage = Double.parseDouble(splitString[3]);
names.add(fullName);
taxIDs.add(splitString[2]);
wages.add(hWage);
}
System.out.println("Employee ID | Employee Full Name | Tax ID | Wage ");
for(int i = 0; i <= names.size() - 1; i++){
System.out.printf(String.format(employeeId, i + 1) + " | " + names.get(i) + " | " + taxIDs.get(i) + " | " + wages.get(i));
System.out.println();
}
}
}
在while
條件中,您正在使用next()
,它使用next()
一個標記,在您的情況下,它是名字。
我將對while循環進行兩項修改:
while (scan.hasNext()) { // <-- check if there's a next token (without consuming it)
info = scan.nextLine();
if (info.trim().equals("$")){ // <-- break if the user wants to quit
break;
}
String[] splitString = info.split("\\s+"); // split on any amount/kind of space using regex-split
String fullName = "";
firstName = splitString[0];
lastName = splitString[1];
System.out.println(Arrays.toString(splitString));
fullName = firstName + " " + lastName;
double hWage = Double.parseDouble(splitString[3]);
names.add(fullName);
taxIDs.add(splitString[2]);
wages.add(hWage);
}
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