如何在表格中加入JButton对象和为什么下面简短代码并不能显示columnNames数组的内容

[街角的蒲公英]

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class duihua extends JFrame{
JFrame f=new JFrame("sdfa ");
JButton bt2;
public duihua(){
Container cp=f.getContentPane();
String[] columnNames ={"ID","姓名","学号","分数"};

Object[][] rowData = {
{"001","卞炎安","200753225130","95"
},
{"002","周天宇","200753225112","98"

},
{"003","陆登基","200753225132","99"
},
{"004","陈少","200753225132","99"
},
{"005","陆挺","200753225132","99"
},
{"006","啊为","200753225132","99"
},
{"007","小滔滔","200753225133","99"
},

{"008","郭楠","200753225132","99"
},
{"009","营长","200753225132","99"
},
{"010","子论","200753225132","99"
}

};
// JButton bt2=new JButton("测试inputPane`");//同上
JTable jTable = new JTable(rowData,columnNames);
cp.add(jTable);
//jTable.add(bt2);
f.setVisible(true);
f.pack();
};


public static void main(String[] args){
new duihua();
}
}

[风尘中国]

下面这个修改可以显示 表头，也就是你说的那个数组，你先看看，就是要将JTable放在JScrollPane里面，这也是java官方推荐采用的方法

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class Duihua extends JFrame{
    private JFrame f=new JFrame("sdfa ");
    private Container cp=null;
    private JButton bt2;
    private JScrollPane spane=null;

    public Duihua(){
        cp=f.getContentPane();

        String[] columnNames ={"ID","姓名","学号","分数"};

        Object[][] rowData = {
                {"001","卞炎安","200753225130","95"
                },
                {"002","周天宇","200753225112","98"

                },
                {"003","陆登基","200753225132","99"
                },
                {"004","陈少","200753225132","99"
                },
                {"005","陆挺","200753225132","99"
                },
                {"006","啊为","200753225132","99"
                },
                {"007","小滔滔","200753225133","99"
                },

                {"008","郭楠","200753225132","99"
                },
                {"009","营长","200753225132","99"
                },
                {"010","子论","200753225132","99"
                }

        };
// JButton bt2=new JButton("测试inputPane`");//同上
        JTable jTable = new JTable(rowData,columnNames);
        spane=new JScrollPane(jTable);
        cp.add(spane);
//jTable.add(bt2);
        f.setVisible(true);
        f.pack();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    };


    public static void main(String[] args){
        new Duihua();
    }
}

[风尘中国]

至于你说的在JTable里面加入JButton，你代码这种方法肯定是不行的，不符合JTable里面对应的数据模型

而且JButton你想要实现的功能是什么呢？