我想創建aj框架,用戶在J中放置一個問題值文本字段和應用程序顯示數學符號,但我不知道它是否存在Java庫中的任何包或任何其他技術像二次問題在java中使用jlabel顯示數學公式
a=5
b=10
c=15
顯示
ax^2+10x=15
D=b^2-4ac
alpha=(-b+root(D)/2a
beta=(-b-root(D)/2a
說得非常難看,我想顯示喜歡數學符號,請給我任何的想法,教程等.... 我的代碼
package linerEquations;
import javax.swing.*;
import java.awt.Font;
import java.awt.event.*;
class MatrixCalculator extends JFrame implements ActionListener{
JLabel jlTitle,Xa1,Yb1,C1;
JLabel Xa2,Yb2,C2;
JPanel jp;
JTextField jtXa1,jtYb1,jtC1;
JTextField jtXa2,jtYb2,jtC2;
JButton jbExit,jbClear,jbSolution,jbShowGraph;
static MatrixCalculator fram;
MatrixCalculator(){
setTitle("Matrix Calculator");
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
getContentPane().setLayout(null);
setSize(500,265);
setResizable(false);
//jPanle
jp=new JPanel();
jp.setLocation(10, 11);
jp.setLayout(null);
jp.setSize(464,194);
getContentPane().add(jp);
//Title
jlTitle =new JLabel("Linear Equestion of Two Variable");
jlTitle.setFont(new Font("Tahoma", Font.BOLD, 19));
jlTitle.setBounds(61,11,332,20);
jp.add(jlTitle);
//Label
//Xa1
Xa1 =new JLabel("Xa1= ");
Xa1.setBounds(78,64,50,20);
jp.add(Xa1);
//Yb1
Yb1 =new JLabel("Yb1= ");
Yb1.setBounds(178,64,50,20);
jp.add(Yb1);
//C1
C1 =new JLabel("C1= ");
C1.setBounds(278,64,50,20);
jp.add(C1);
//JTextField
//jtXa1
jtXa1 =new JTextField();
jtXa1.setBounds(108,64,50,20);
jp.add(jtXa1);
//jtYb1
jtYb1 =new JTextField();
jtYb1.setBounds(208,64,50,20);
jp.add(jtYb1);
//jtC1
jtC1 =new JTextField();
jtC1.setBounds(308,64,50,20);
jp.add(jtC1);
//Label 2
//Xa2
Xa2 =new JLabel("Xa2= ");
Xa2.setBounds(78,94,50,20);
jp.add(Xa2);
//Yb2
Yb2 =new JLabel("Yb2= ");
Yb2.setBounds(178,94,50,20);
jp.add(Yb2);
//C2
C2 =new JLabel("C2= ");
C2.setBounds(278,94,50,20);
jp.add(C2);
//JTextField
//jtXa2
jtXa2 =new JTextField();
jtXa2.setBounds(108,94,50,20);
jp.add(jtXa2);
//jtYb2
jtYb2 =new JTextField();
jtYb2.setBounds(208,94,50,20);
jp.add(jtYb2);
//jtC2
jtC2 =new JTextField();
jtC2.setBounds(308,94,50,20);
jp.add(jtC2);
//Button
//Solution Button
jbSolution =new JButton("Solution");
jbSolution.setBounds(20,150,80,30);
jbSolution.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new Solution(fram);
}
});
jp.add(jbSolution);
//ShowGraph Button
jbShowGraph =new JButton("Show Graph");
jbShowGraph.setBounds(108,150,117,30);
jp.add(jbShowGraph);
//Clear Button
jbClear =new JButton("Clear");
jbClear.setBounds(249,150,80,30);
jp.add(jbClear);
//Exit Button
jbExit =new JButton("Exit");
jbExit.setBounds(352,150,80,30);
jbExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
jp.add(jbExit);
}
public static void main(String args[]){
fram=new MatrixCalculator();
}
public void actionPerformed(ActionEvent e){
}
}
一個問題通常在最後有一個'?'...... – bobbel
什麼東西在你的代碼中不起作用? – alex2410
你的意思是[this](http://stackoverflow.com/questions/456002/displaying-fancy-equations-with-java) – MadProgrammer