源代码(书上的)import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class test8 implements ActionListener
{
JTable table=null;
DefaultTableModel defaultModel=null;
public test8()
{
JFrame f=new JFrame();
Object[][] p=
{
{"王鹏",new Integer(91),new Integer(1949),new Integer(1910)},
{"朱雪莲",new Integer(82),new Integer(1969),new Integer(1510)},
{"王鹏",new Integer(47),new Integer(1957),new Integer(1040)},
{"王鹏",new Integer(61),new Integer(1957),new Integer(1180)},
{"王鹏",new Integer(90),new Integer(1987),new Integer(1770)},
};
String[] n={"姓名","工号","出生年月","薪水"};
defaultModel=new DefaultTableMode(p,n);
table=new JTable(defaultModel);
table.setPreferredScrollableViewportSize(new Dimension(400,80));
JScrollPane s=new JScrollPane(table);
JPanel panel=new JPanel();
JButton b=new JButton("增加行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
b=new JButton("删除行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
Container contentPane=f.getContentPane();
contentPane.add(panel,BorderLayout.NORTH);
contentPane.add(s,BorderLayout.CENTER);
f.setTitle("AddRemoveCells");
f.back();
f.setVisible(true);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{System.exit(0);}
}); }
public void actionPerformed(ActionEvent e)
{
if(e.getActionCommmand().equals("增加行"))
defaultModel.addRow(new Vector());
if(e.getActionCommmand().equals("删除行"))
{
int rowcount=defaultModel.getRowCount()-1;
if(rowcount>=0)
{
defaultModel.removeRow(rowcount);
defaultModel.setRowCount(rowcount); }
table.revalidate();
}
public static void main(String[] args)
{
new test8();
}
}}
运行提示 test8.java:65非法的表达式开始public static void main(String[] args)
还有tes8.java:65 需要‘;’public static void main(String[] args)
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class test8 implements ActionListener
{
JTable table=null;
DefaultTableModel defaultModel=null;
public test8()
{
JFrame f=new JFrame();
Object[][] p=
{
{"王鹏",new Integer(91),new Integer(1949),new Integer(1910)},
{"朱雪莲",new Integer(82),new Integer(1969),new Integer(1510)},
{"王鹏",new Integer(47),new Integer(1957),new Integer(1040)},
{"王鹏",new Integer(61),new Integer(1957),new Integer(1180)},
{"王鹏",new Integer(90),new Integer(1987),new Integer(1770)},
};
String[] n={"姓名","工号","出生年月","薪水"};
defaultModel=new DefaultTableMode(p,n);
table=new JTable(defaultModel);
table.setPreferredScrollableViewportSize(new Dimension(400,80));
JScrollPane s=new JScrollPane(table);
JPanel panel=new JPanel();
JButton b=new JButton("增加行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
b=new JButton("删除行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
Container contentPane=f.getContentPane();
contentPane.add(panel,BorderLayout.NORTH);
contentPane.add(s,BorderLayout.CENTER);
f.setTitle("AddRemoveCells");
f.back();
f.setVisible(true);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{System.exit(0);}
}); }
public void actionPerformed(ActionEvent e)
{
if(e.getActionCommmand().equals("增加行"))
defaultModel.addRow(new Vector());
if(e.getActionCommmand().equals("删除行"))
{
int rowcount=defaultModel.getRowCount()-1;
if(rowcount>=0)
{
defaultModel.removeRow(rowcount);
defaultModel.setRowCount(rowcount); }
table.revalidate();
}
public static void main(String[] args)
{
new test8();
}
}}
运行提示 test8.java:65非法的表达式开始public static void main(String[] args)
还有tes8.java:65 需要‘;’public static void main(String[] args)
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public void actionPerformed(ActionEvent e)
{
if (e.getActionCommand().equals("增加行"))
defaultModel.addRow(new Vector());
if (e.getActionCommand().equals("删除行"))
{
int rowcount = defaultModel.getRowCount() - 1;
if (rowcount >= 0)
{
defaultModel.removeRow(rowcount);
defaultModel.setRowCount(rowcount);
}
table.revalidate();
}
}
public static void main(String[] args)
{
new test8();
}
}
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class Test8 implements ActionListener
{
JTable table=null;
DefaultTableModel defaultModel=null;
public Test8()
{
JFrame f=new JFrame();
Object[][] p=
{
{"王鹏",new Integer(91),new Integer(1949),new Integer(1910)},
{"朱雪莲",new Integer(82),new Integer(1969),new Integer(1510)},
{"王鹏",new Integer(47),new Integer(1957),new Integer(1040)},
{"王鹏",new Integer(61),new Integer(1957),new Integer(1180)},
{"王鹏",new Integer(90),new Integer(1987),new Integer(1770)}, };
String[] n={"姓名","工号","出生年月","薪水"};
defaultModel=new DefaultTableModel(p,n);
// defaultModel=new DefaultTableMode(p,n);
table=new JTable(defaultModel);
table.setPreferredScrollableViewportSize(new Dimension(400,80));
JScrollPane s=new JScrollPane(table);
JPanel panel=new JPanel();
JButton b=new JButton("增加行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
b=new JButton("删除行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
Container contentPane=f.getContentPane();
contentPane.add(panel,BorderLayout.NORTH);
contentPane.add(s,BorderLayout.CENTER);
f.setTitle("AddRemoveCells");
// f.back();
f.pack();
f.setVisible(true);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{System.exit(0);}
}); }
public void actionPerformed(ActionEvent e)
{
if(e.getActionCommand().equals("增加行"))
defaultModel.addRow(new Vector());
if(e.getActionCommand().equals("删除行"))
{
int rowcount=defaultModel.getRowCount()-1;
if(rowcount>=0)
{
defaultModel.removeRow(rowcount);
defaultModel.setRowCount(rowcount); }
table.revalidate();
}
}
public static void main(String[] args)
{
new Test8();
}
}
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;public class test implements ActionListener {
JTable table = null;
DefaultTableModel defaultModel = null; public test() {
JFrame f = new JFrame();
Object[][] p = {
{ "王鹏", new Integer(91), new Integer(1949), new Integer(1910) },
{ "朱雪莲", new Integer(82), new Integer(1969), new Integer(1510) },
{ "王鹏", new Integer(47), new Integer(1957), new Integer(1040) },
{ "王鹏", new Integer(61), new Integer(1957), new Integer(1180) },
{ "王鹏", new Integer(90), new Integer(1987), new Integer(1770) }, };
String[] n = { "姓名", "工号", "出生年月", "薪水" };
defaultModel = new DefaultTableModel(p, n);
table = new JTable(defaultModel);
table.setPreferredScrollableViewportSize(new Dimension(400, 80));
JScrollPane s = new JScrollPane(table);
JPanel panel = new JPanel();
JButton b = new JButton("增加行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
b = new JButton("删除行");
panel.add(b);
panel.add(b);
b.addActionListener(this);
Container contentPane = f.getContentPane();
contentPane.add(panel, BorderLayout.NORTH);
contentPane.add(s, BorderLayout.CENTER);
f.setTitle("AddRemoveCells");
// f.back();
f.setVisible(true);
f.setSize(500, 500);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}); } public void actionPerformed(ActionEvent e)
{
if(e.getActionCommand().equals("增加行"))
defaultModel.addRow(new Vector());
if(e.getActionCommand().equals("删除行"))
{
int rowcount=defaultModel.getRowCount()-1;
if(rowcount>=0)
{
defaultModel.removeRow(rowcount);
defaultModel.setRowCount(rowcount);}
table.revalidate();
}}
public static void main(String[] args) {
new test();
}
}
main函数应该在类中你的写在方法里面了 ,你要是不理解的话就是在最后面的那个大括号前面加main函数就好了。再就是你的顶级容器没有设置大小 我给你加上了,你看看还有什么要改的