Java語言程序設(shè)計(jì)案例教程 -課件 6-13簡易計(jì)算器

Java語言程序設(shè)計(jì)簡易計(jì)算器簡易計(jì)算器Java語言程序設(shè)計(jì)publicCalcuFrame(Stringstr){

JPanelpNorth=newJPanel();

JPanelpCenter=newJPanel();

input=newJTextField("",20);

ACBtn.setForeground(Color.red);

ACBtn.addActionListener(this);

pNorth.add(input);

pNorth.add(ACBtn);

//將數(shù)字、操作符按鈕加入pCenter

pCenter.setLayout(newGridLayout(4,4,5,5));

for(inti=0;i<btn.length;i++){

btn[i]=newJButton(name[i]);

btn[i].setForeground(Color.BLUE);

pCenter.add(btn[i]);

btn[i].addActionListener(this);//添加事件監(jiān)聽器

}

//將pNorth、pCenter加入CalcuFrame

this.add(pNorth,BorderLayout.NORTH);

this.add(pCenter,BorderLayout.CENTER);

//設(shè)置CalcuFrame的樣式

setTitle(str);

setBounds(150,150,220,200);

setDefaultCloseOperation(DISPOSE_ON_CLOSE);

setVisible(true);}表格的應(yīng)用Java語言程序設(shè)計(jì)//取得當(dāng)前選中的行introw=table.getSelectedRow();//表格行數(shù)introwCount=table.getRowCount();//定義一行數(shù)據(jù)Vectorinfo=newVector();info.add(jtid.getText());info.add(jtname.getText());info.add(jtdw.getText());info.add(jttel.getText());if(e.getSource()==jbadd){dtm.addRow(info);}if(e.getSource()==jbdel){dtm.removeRow(row);}if(e.getSource()==jbins){//加到第一行dtm.insertRow(0,info);}if(e.getSource()==jbmod){dtm.setValueAt(jtid.getText(),row,0);dtm.setValueAt(jtname.getText(),row,1);dtm.setValueAt(jtdw.getText(),row,2);dtm.setValueAt(jttel.getText(),row,3);}if(e.getSource()==table){jtid.setText((String)dtm.getValueAt(row,0));jtname.setText((String)dtm.getValueAt(row,1));jtdw.setTex