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**真棒家伙我得到这个工作纠正我的比较和我的IF语句，但我现在正在控制台上打印信息作为文件。没有更多的错误代码，但控制台只是说java.io.PrintWriter .....关于如何使用outputFile和导入javax.swing.JOptionPane的任何指针？更正后的代码如下不兼容的操作数类型字符串和字符的语法错误
import java.io.File;
import java.util.Scanner;
import java.io.PrintWriter;
import javax.swing.JOptionPane;
public class StudentFile {
public static void main(String[] args) throws Exception {
// Declare and initialize variables
String studentSummary = "Student Summary Report";
String eligibleBachelorsReport = "Eligible Bachelors Report";
// input record
String firstName;
String lastName;
String gender;
int age;
String maritalStatus;
// counters
int marriedMen = 0;
int singleMen = 0;
int marriedWomen = 0;
int singleWomen = 0;
// create studentInput to read from StudentFile.txt
File inputFile = new File("StudentFile.txt");
Scanner input = new Scanner(inputFile);
while (input.hasNext()) {
// read name, gender, age, maritalStatus
firstName = input.next();
lastName = input.next();
gender = input.next();
age = input.nextInt();
maritalStatus = input.next();
if (gender.equals("F"))
{
if(maritalStatus.equals("M"))
{
marriedWomen = marriedWomen ++;
}
else {
singleWomen = singleWomen ++;
}
}
else if (maritalStatus.equals("M")){
marriedMen = marriedMen++;
}else{
singleMen = singleMen++;
}
if(age > 30) {
eligibleBachelorsReport += " "+firstName + " "+lastName;
}
System.out.println(firstName + " " + lastName + " " + gender + " " + age + " "
+ maritalStatus);
}
// write studentSummary, eligibleBachelorsReport to StudentReport.txt
PrintWriter outputFile = new PrintWriter("StudentReport.txt");
outputFile.println(studentSummary);
outputFile.println(eligibleBachelorsReport);
// write studentSummary, eligibleBachelorsReport to the console
System.out.println(studentSummary);
System.out.println(eligibleBachelorsReport);
JOptionPane.showMessageDialog(null, outputFile);
input.close();
outputFile.close();
}}
我想让这段代码工作，我似乎无法弄清楚我做错了什么。我明白，我正在试图比较这个文本文件中的字符串数据，我已经导入/附加到这个程序，但似乎无法通过。
我的代码如下，我导入的txt文件标记为StudentFile.txt，并按以下顺序包含三行信息：姓名，性别，年龄，婚姻状况 例如：Mick Jagger M 22 S
我在做什么错了，为什么我一直收到语法错误？我使用简单的eclipse，通常我可以通过使用它们的调试器来发现我做了什么错误，但我有点卡住了。请帮忙！ THX
import java.io.File;
import java.util.Scanner;
import java.io.PrintWriter;
import javax.swing.JOptionPane;
public class StudentFile {
public static void main(String[] args) throws Exception {
// Declare and initialize variables
String studentSummary = "Student Summary Report";
String eligibleBachelorsReport = "Eligible Bachelors Report";
// input record
String firstName;
String lastName;
String gender;
int age;
String maritalStatus;
// counters
int marriedMen = 0;
int singleMen = 0;
int marriedWomen = 0;
int singleWomen = 0;
// create studentInput to read from StudentFile.txt
File inputFile = new File("StudentFile.txt");
Scanner input = new Scanner(inputFile);
while (input.hasNext()) {
// read name, gender, age, maritalStatus
firstName = input.next();
lastName = input.next();
gender = input.next();
age = input.nextInt();
maritalStatus = input.next();
if (gender.equals(F)){
}if maritalStatus.equals(M)){
marriedWomen = marriedWomen ++;
} else {
singleWomen = singleWomen ++;
}else{
}if maritalStatus.equals(M)){
marriedMen = marriedMen ++
}else{
singleMen = singleMen ++
if age > 30 {
eligibleBachelorsReport += ""firstName + ""lastName
}
System.out.println(firstName + " " + lastName + " " + gender + " " + age + " "
+ maritalStatus);
}
// write studentSummary, eligibleBachelorsReport to StudentReport.txt
PrintWriter outputFile = new PrintWriter("StudentReport.txt");
outputFile.println(studentSummary);
outputFile.println(eligibleBachelorsReport);
// write studentSummary, eligibleBachelorsReport to the console
System.out.println(studentSummary);
System.out.println(eligibleBachelorsReport);
input.close();
outputFile.close();
}}
米克贾格尔是22和单！？ – NullUserException
@NullUserException我正要标记注释，然后我看到了版主符号。 –
@LuiggiMendoza随意标记来自mods的评论，就像你会标记任何其他用户一样。 – NullUserException