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나는 학생들을위한 정보가 txt 파일에서 읽혀지는 800 명의 학생들의 테이블을 보여주는 GUI를 쓰고있다. Screen 클래스에 두 개의 JPanel 탭 "PList"와 "PChart"가있는 TabbedPane이있는 Screen 클래스와 StudentTable() 클래스를 작성했습니다. 내 PList JPanel에 StudentTable 클래스를 추가하고 싶습니다. 그래서 Screen 클래스를 실행하면 students 테이블이있는 StudentTable 클래스가 표시됩니다. 일반적으로 나는 탭없이 테이블을 보여 주었다. 먼저 "Students.txt"파일을 연 다음 파일을 읽었습니다. 그런 다음 파일을 닫았습니다. 그 후 테이블을 생성하는 void 메소드 createTable()을 생성했습니다. 테이블은 ArrayList에서 정보를 가져옵니다. 이제이 클래스를 내 PList JPanel에 추가하려고합니다. 코드는 좀 길다. 그래서 나는 그들을 업로드했다. 그러나 내가 코드를 공유하기를 원한다면, 나는 그것을 할 수있다. 화면 클래스의 표와 패널을 만드는 방법
Screen.javaJTable을 JTabbedPane에 추가하는 방법?
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
public class Screen extends JFrame implements ActionListener {
private JTabbedPane tabbedPane;
private JPanel PList, PChart;
private JMenuBar menuBar;
private JMenu menuStudent, menuSort, menuFilter;
private JMenuItem addStudent, removeStudent, removeAllStudents;
private JMenuItem sortLastName, sortId, sortAverage;
private JMenuItem filterLetterGrade, removeFilter;
private StudentTable studentTable;
public Screen() {
// TODO Auto-generated constructor stub
tabbedPane = new JTabbedPane();
menuBar = new JMenuBar();
menuStudent = new JMenu();
menuSort = new JMenu();
menuFilter = new JMenu();
addStudent = new JMenuItem();
removeStudent = new JMenuItem();
removeAllStudents = new JMenuItem();
sortLastName = new JMenuItem();
sortId = new JMenuItem();
sortAverage = new JMenuItem();
filterLetterGrade = new JMenuItem();
removeFilter = new JMenuItem();
PList = new JPanel();
PChart = new JPanel();
studentTable = new StudentTable();
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
setExtendedState(MAXIMIZED_BOTH);
setTitle("Screen");
setLayout(new BorderLayout());
setJMenuBar(menuBar);
// Menu
menuStudent.setText("Student");
addStudent.setText("Add Student");
addStudent.addActionListener(this);
removeStudent.setText("Remove Student");
removeStudent.addActionListener(this);
removeAllStudents.setText("Remove All Students");
removeAllStudents.addActionListener(this);
menuStudent.add(addStudent);
menuStudent.add(removeStudent);
menuStudent.add(removeAllStudents);
menuSort.setText("Sort");
sortLastName.setText("Sort by last name");
sortLastName.addActionListener(this);
sortId.setText("Sort by ID");
sortId.addActionListener(this);
sortAverage.setText("Sort by average");
sortAverage.addActionListener(this);
menuSort.add(sortLastName);
menuSort.add(sortId);
menuSort.add(sortAverage);
menuFilter.setText("Filter");
filterLetterGrade.setText("Filter by letter grade");
filterLetterGrade.addActionListener(this);
removeFilter.setText("Remove filter");
removeFilter.addActionListener(this);
menuFilter.add(filterLetterGrade);
menuFilter.add(removeFilter);
menuBar.add(menuStudent);
menuBar.add(menuSort);
menuBar.add(menuFilter);
// Tabs
tabbedPane.add("List", PList);
tabbedPane.add("Chart", PChart);
add(tabbedPane);
PList.add(studentTable);
}
public static void main(String[] args) {
new Screen();
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
}
StudentTable.java
import java.net.URL;
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class StudentTable extends JPanel {
private static JTable table;
private String name, lastName, letterGrade;
private long studentId;
private double quiz1,quiz2,project,midterm,finalGrade,average;
private static ArrayList<Students> studentList;
private Scanner scanner;
public StudentTable() {
}
/**
*
* @param name
* @param lastName
* @param studentId
* @param quiz1
* @param quiz2
* @param project
* @param midterm
* @param finalGrade
* @param average
* @param letterGrade
*/
public StudentTable(String name, String lastName, long studentId, double quiz1, double quiz2, double project, double midterm, double finalGrade, double average, String letterGrade) {
this.name = name;
this.lastName = lastName;
this.letterGrade = letterGrade;
this.studentId = studentId;
this.quiz1 = quiz1;
this.quiz2 = quiz2;
this.project = project;
this.midterm = midterm;
this.finalGrade = finalGrade;
this.average = average;
}
// GET & SET METHODS
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getLetterGrade() {
return letterGrade;
}
public void setLetterGrade(String letterGrade) {
this.letterGrade = letterGrade;
}
public long getStudentId() {
return studentId;
}
public void setStudentId(long studentId) {
this.studentId = studentId;
}
public double getQuiz1() {
return quiz1;
}
public void setQuiz1(double quiz1) {
this.quiz1 = quiz1;
}
public double getQuiz2() {
return quiz2;
}
public void setQuiz2(double quiz2) {
this.quiz2 = quiz2;
}
public double getProject() {
return project;
}
public void setProject(double project) {
this.project = project;
}
public double getMidterm() {
return midterm;
}
public void setMidterm(double midterm) {
this.midterm = midterm;
}
public double getFinalGrade() {
return finalGrade;
}
public void setFinalGrade(double finalGrade) {
this.finalGrade = finalGrade;
}
public double getAverage() {
return average;
}
public void setAverage(double average) {
this.average = average;
}
public ArrayList<Students> getStudentList() {
return studentList;
}
public void setStudentList(ArrayList<Students> studentList) {
this.studentList = studentList;
}
// Opening "Students.txt" file from a url.
public void openFile() {
try {
URL url = new URL("http://rawsly.com/Students.txt");
scanner = new Scanner(url.openStream());
} catch (Exception e) {
// TODO: handle exception
System.out.println("Error: " + e.getMessage());
}
}
// Reading "Students.txt" file and adding students to the "studentList" ArrayList.
public void readFile() {
studentList = new ArrayList<>();
while(scanner.hasNext()) {
name = scanner.next();
lastName = scanner.next();
studentId = scanner.nextLong();
quiz1 = scanner.nextDouble();
quiz2 = scanner.nextDouble();
project = scanner.nextDouble();
midterm = scanner.nextDouble();
finalGrade = scanner.nextDouble();
average = scanner.nextDouble();
letterGrade = scanner.next();
studentList.add(new Students(name, lastName, studentId, quiz1, quiz2, project, midterm, finalGrade, average, letterGrade));
}
}
// Closing "Students.txt" file.
public void closeFile() {
scanner.close();
}
public void createTable() {
openFile();
readFile();
closeFile();
String [] columnNames = {"NAME", "SURNAME", "ID", "QUIZ1", "QUIZ2", "PROJECT", "MIDTERM", "FINAL", "AVERAGE", "LETTER GRADE"};
Object [][] data = new Object[studentList.size()][10];
for(int i=0; i<studentList.size(); i++) {
for(int j=0; j<10; j++) {
switch (j) {
case 0:
data[i][0] = studentList.get(i).getName();
break;
case 1:
data[i][1] = studentList.get(i).getLastName();
break;
case 2:
data[i][2] = studentList.get(i).getStudentId();
break;
case 3:
data[i][3] = studentList.get(i).getQuiz1();
break;
case 4:
data[i][4] = studentList.get(i).getQuiz2();
break;
case 5:
data[i][5] = studentList.get(i).getProject();
break;
case 6:
data[i][6] = studentList.get(i).getMidterm();
break;
case 7:
data[i][7] = studentList.get(i).getFinalGrade();
break;
case 8:
data[i][8] = studentList.get(i).getAverage();
break;
case 9:
data[i][9] = studentList.get(i).getLetterGrade();
break;
} // end of the switch
} // end of the first for loop
} // end of the second for loop
table = new JTable(data,columnNames) {
public boolean isCellEditable(int row, int column) { // To make row and columns not editable
return false;
}
};
table.setFillsViewportHeight(true);
table.setAutoCreateRowSorter(true); // to activate sorting property of each column
}
public static void main(String[] args) {
StudentTable s = new StudentTable();
s.createTable();
}
}
질문에 코드를 게시하십시오. 두 번째로, 생성 된'JTable'을 사용하지 않았으니 최소한'StudentTable'에 getter를 추가하여'Screen'에서'JTable'을 얻고 적절한 패널에'JTable'을 추가하십시오. 셋째, 코드를 두 번 다시 생각해보십시오. 여러 가지 나쁜 점이 있습니다. –
좋아요, 다시 작업하겠습니다. 귀하의 제안에 감사드립니다. :) – rawsly
당신이'PList.add (studentTable);'에 의해 테이블을 추가하는 것을 봅니다. 문제가 정확히 무엇입니까? – c0der