我无法找到错误。 Eclipse给了我这个错误。每个{ }都匹配。请帮忙。
此行的多个标记 - 令牌上的语法错误“）”,;预期 - 令牌上的语法错误“（”，{expected
我的代码如下：
import javax.swing.*;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextField;
import matlabcontrol.MatlabConnectionException;
import matlabcontrol.MatlabInvocationException;
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
class BackgroundImageJFrame1 extends JFrame {
public BackgroundImageJFrame1() {
JButton b1;
JLabel l1;
final JFileChooser fc = null;
final JTextField textField;
final JButton jb1 = null;
setTitle("Parallel Session");
setSize(400, 400);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
getContentPane().setLayout(new BorderLayout());
setContentPane(new JLabel(new ImageIcon("giphy.gif")));
getContentPane().setLayout(new FlowLayout());
l1 = new JLabel("Parallel Simulation Model");
l1.setForeground(Color.RED);
l1.setFont(new Font("Palatino Linotype", Font.BOLD, 20));
l1.setToolTipText("Getting Started");
l1.setBounds(86, 54, 219, 45);
b1 = new JButton("\n\n LET'S GO!");
b1.setVerticalAlignment(SwingConstants.BOTTOM);
b1.setFont(new Font("Microsoft Sans Serif", Font.PLAIN, 14));
b1.setForeground(Color.BLUE);
b1.setBackground(Color.YELLOW);
b1.setToolTipText("To begin click here!");
b1.setBounds(120, 210, 272, 186);
JProgressBar progressBar = new JProgressBar();
progressBar.setIndeterminate(true);
progressBar.setToolTipText("Progress");
progressBar.setBounds(130, 207, 146, 14);
getContentPane().add(l1);
getContentPane().add(b1);
getContentPane().add(progressBar);
// Just for refresh :) Not optional!
setSize(399, 399);
setSize(400, 400);
b1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
JFrame Frame1 = new JFrame();
final JPanel panel1 = new JPanel();
JLabel j1 = new JLabel("Select your model");
panel1.add(j1);
JTextField jt1 = new JTextField();
jt1.setPreferredSize(new Dimension(160, 20));
panel1.add(jt1);
new JButton("Browse");
jb1.setPreferredSize(new Dimension(100, 20));
panel1.add(jb1);
JLabel label1 = new JLabel("Enter the number instances");
Frame1.setVisible(true);
Frame1.setSize(300, 300);
Frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel1.add(label1);
Frame1.getContentPane().add(panel1);
panel1.setBackground(Color.CYAN);
final JTextArea t1 = new JTextArea("Enter here");
panel1.add(t1);
JButton b11 = new JButton("SET");
panel1.add(b11);
jb1.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnBrowseActionPerformed(null);
}
});
private void btnBrowseActionPerformed(java.awt.event.ActionEvent evt) {
if (fc == null) {
fc = new JFileChooser(".");
}
// Show it.
int returnVal = fc.showOpenDialog(null);
// Process the results.
if (returnVal == JFileChooser.APPROVE_OPTION) {
textField.setText(fc.getSelectedFile().getPath());
} else {
textField.setText("");
}
// Reset the file chooser for the next time it's shown.
fc.setSelectedFile(null);
}
//done
b11.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
String a = t1.getText();
System.out.println(" " + a);
try {
int itr = Integer.parseInt(a);
for (int i = 1; i <= itr; i++) {
multi m = new multi();
JLabel l1 = new JLabel("MANUEVER DETAILS");
JTextArea p = new JTextArea(
"Enter the manuever here");
panel1.add(l1);
panel1.add(p);
}
} catch (InvocationTargetException
| InterruptedException
| MatlabConnectionException
| MatlabInvocationException e) {
// TODO Auto-generated catch block
((Throwable) e).printStackTrace();
}
}
});
}
});
}
public static void main(String[] args) throws MatlabConnectionException,
MatlabInvocationException, IOException {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
System.out.println("hey");
new BackgroundImageJFrame1();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
}
答案 0 :(得分：4)
你在方法中有一个方法，把btnBrowseActionPerformed方法放在BackgroundImageJFrame1之外
答案 1 :(得分：2)
你不能在方法内部声明方法。
在btnBrowseActionPerformed构造函数之外取出BackgroundImageJFrame1()方法。
此代码写在方法内。
jb1.addActionListener(new java.awt.event.ActionListener() {
这是一个新方法，不应该在任何方法中。
private void btnBrowseActionPerformed(java.awt.event.ActionEvent evt) {
注意：正如@Ranjeet所提到的，你需要在构造函数之外的declare类级变量，你可以初始化构造函数内部。
答案 2 :(得分：0)
在发布的代码中，匿名类定义在使用符号}）的actionPerformed（）方法之后结束;
btnBrowseActionPerformed（）方法是同一个类的私有方法，类定义应该包含该方法。基本上是}）;关闭匿名类应该在btnBrowseActionPerformed（）定义之后。
jb1.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnBrowseActionPerformed(null);
}
// do not close the anonymous inner class here
//the below method belongs to the anonymous class.
private void btnBrowseActionPerformed(java.awt.event.ActionEvent evt) {
if (fc == null) {
fc = new JFileChooser(".");
}
// Show it.
int returnVal = fc.showOpenDialog(null);
// Process the results.
if (returnVal == JFileChooser.APPROVE_OPTION) {
textField.setText(fc.getSelectedFile().getPath());
} else {
textField.setText("");
}
// Reset the file chooser for the next time it's shown.
fc.setSelectedFile(null);
}
});//close it here instead
答案 3 :(得分：0)