java课程设计报告_简单图形界面计算器的设计

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);

jButton1.setText(\

jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } });

jButton2.setText(\

jButton2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton2ActionPerformed(evt); } });

jButton3.setText(\

jButton3.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton3ActionPerformed(evt); } });

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup(

jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup()

.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(jPanel1Layout.createSequentialGroup() .addContainerGap() .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))

.addGroup(jPanel1Layout.createSequentialGroup() .addGap(50, 50, 50)

.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)

.addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE)

.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE)

.addGap(52, 52, 52)

.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE))

.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 318, javax.swing.GroupLayout.PREFERRED_SIZE))

.addGap(0, 66, Short.MAX_VALUE))) .addContainerGap()) );

jPanel1Layout.setVerticalGroup(

jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(26, 26, 26)

.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jButton1) .addComponent(jButton2) .addComponent(jButton3))

.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)

.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addGap(7, 7, 7)) );

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(

layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) );

layout.setVerticalGroup(

layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) );

pack();

}// /**数据的输入：

* 程序开始时，程序初始化文本框的内容为“0”，点击数字按钮，

* if语句判断，若文本框数据非0，则当下按的数字键对应的数字，作为字符串接入之前数据尾部，

* else，文本框显示当下按的数字键所对应的数字。 */

private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

//if语句判定当前字符串是否为空，若不为空，则将字符串长度减1之后，再赋值给原字符串；否则，将0复制给原字符串。 String s = jTextField1.getText(); if(!s.equals(\

s = s.substring(0,s.length()-1); if(s.equals(\ s = \

jTextField1.setText(s);

}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: //复位操作

jTextField1.setText(\ d1 = 0; d2 = 0; op = \ flag = false;

}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here: //清零操作

jTextField1.setText(\

}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\

jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton10ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton11ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton13ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

if(flag == false&&!jTextField1.getText().equals(\ jTextField1.setText(jTextField1.getText()+\ else

jTextField1.setText(\ flag = false;

}

private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here:

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