写一个类,类的标准表示此类有错误。
但是在类里面的每一行代码段却都是正确的何解?
package ch8;
import javax.swing.table.AbstractTableModel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;public class TableModel1{
public TableModel1() {
JFrame f = new JFrame();
MyTable mt=new MyTable();
JTable t=new JTable(mt); t.setPreferredScrollableViewportSize(new Dimension(550, 30));
JScrollPane s = new JScrollPane(t);
f.getContentPane().add(s, BorderLayout.CENTER);
f.setTitle("JTable1");
f.pack();
f.setVisible(true);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
} public static void main(String args[]) {
new TableModel1();
}
}class MyTable extends AbstractTableModel
{
Object[][] p = {
{"阿呆", new Integer(66),
new Integer(32), new Integer(98), new Boolean(false),new Boolean(false)},
{"阿瓜", new Integer(85),
new Integer(69), new Integer(154), new Boolean(true),new Boolean(false)},
}; String[] n = {"姓名","语文","数学","总分","及格","作弊"}; public int getColumnCount() {
return n.length;
} public int getRowCount() {
return p.length;
} public Object getValueAt(int row, int col) {
return p[row][col];
}
}
但是在类里面的每一行代码段却都是正确的何解?
package ch8;
import javax.swing.table.AbstractTableModel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;public class TableModel1{
public TableModel1() {
JFrame f = new JFrame();
MyTable mt=new MyTable();
JTable t=new JTable(mt); t.setPreferredScrollableViewportSize(new Dimension(550, 30));
JScrollPane s = new JScrollPane(t);
f.getContentPane().add(s, BorderLayout.CENTER);
f.setTitle("JTable1");
f.pack();
f.setVisible(true);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
} public static void main(String args[]) {
new TableModel1();
}
}class MyTable extends AbstractTableModel
{
Object[][] p = {
{"阿呆", new Integer(66),
new Integer(32), new Integer(98), new Boolean(false),new Boolean(false)},
{"阿瓜", new Integer(85),
new Integer(69), new Integer(154), new Boolean(true),new Boolean(false)},
}; String[] n = {"姓名","语文","数学","总分","及格","作弊"}; public int getColumnCount() {
return n.length;
} public int getRowCount() {
return p.length;
} public Object getValueAt(int row, int col) {
return p[row][col];
}
}
Exception in thread "main" java.lang.NoSuchMethodError: ch8.MyTable: method <init>()V not found
at ch8.TableModel1.<init>(TableModel1.java:12)
at ch8.TableModel1.main(TableModel1.java:32)
code运行没问题。但method <init>()V 没见到。这个方法呢?