前一段时间在学校简单的学习了Java，对Java这门我第一次接触的面向对象语言有了一定的了解。
一直没时间整理写的东西，今天打算整理下上传下。
Java相对于C来说比较方便的就是用来写界面（PS：但其实Java写的界面也是十分的“有年代感”）
之前学到写界面时的练手程序就是这个计算器界面
程序其实比较简单，主要就是练习界面的排布等
界面：
代码：
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class CalTest extends JFrame
{
//相关的二级容器和控件声明一下
JTextField showtext;//文本框
JButton bt1;
JButton bt2;
JButton bt3;
JButton bt4;//四个独立的按钮
JPanel panel1;//面板1（25个按钮）
JPanel panel2;//面板2（20个按钮）
JPanel panel3;//面板3（4个按钮）
JPanel panel4;//三个单选框
JButton[] bts1;//左边25个按钮的数组
JButton[] bts2;//右边20个按钮的数组
JButton[] bts3;//4个按钮的数组
JRadioButton[] bts4;//3个单选
public CalTest()
{
init();
}
//初始化窗体及控件的方法
private void init()
{
this.setSize(760,370);
this.setLayout(null);
this.setVisible(true);
showtext=new JTextField();
showtext.setLocation(10, 10);
showtext.setSize(720, 50);
this.add(showtext);
panel1=new JPanel();
panel1.setSize(360, 190);
panel1.setLocation(10, 110);
panel1.setLayout(new GridLayout(5,5,3,3));//设置面板1 网格布局，4行1列
bts1=new JButton[25];
String[] strs1={" ","Inv","In","(",")","Int","sinh","sin","x^2","n！","dms","cosh","cos","x^y","y√x","派","tanh","tan","x^3","3√x","F-E","Exp","Mod","log","10^x"};
for(int i=0;i<strs1.length;i++)
{
bts1[i]=new JButton(strs1[i]);
panel1.add(bts1[i]);
}
this.add(panel1);
panel2=new JPanel();
panel2.setSize(260, 190);
panel2.setLocation(400, 70);
panel2.setLayout(new GridLayout(5,4,3,3));//设置面板2 网格布局，5行4列
bts2=new JButton[20];
String[] strs2={"MC","MR","MS","M+","←","CE","C","+/","7","8","9","/","4","5","6","*","1","2","3","-"};
for(int i=0;i<strs2.length;i++)
{
bts2[i]=new JButton(strs2[i]);
panel2.add(bts2[i]);
}
this.add(panel2);
panel3=new JPanel();
panel3.setSize(55, 150);
panel3.setLocation(675, 70);
panel3.setLayout(new GridLayout(4,1,3,3));//设置面板3 网格布局，4行1列
bts3=new JButton[4];
String[] strs3={"M-","√","%","1/x"};
for(int i=0;i<strs3.length;i++)
{
bts3[i]=new JButton(strs3[i]);
panel3.add(bts3[i]);
}
this.add(panel3);
panel4=new JPanel();
panel4.setSize(50, 50);
panel4.setLocation(20, 80);
panel4.setLayout(new GridLayout(1,3,3,3));//设置面板3 网格布局，4行1列
bts4=new JRadioButton[3];
String[] strs4={"度","弧度","梯度"};
for(int i=0;i<strs4.length;i++)
{
bts4[i]=(JRadioButton) new JRadioButton(strs4[i]);
panel4.add(bts4[i]);
}
this.add(panel4);
bt1=new JButton("0");
bt1.setSize(127, 35);
bt1.setLocation(400,263);
this.add(bt1);
bt2=new JButton(".");
bt2.setSize(62, 35);
bt2.setLocation(530,263);
this.add(bt2);
bt3=new JButton("+");
bt3.setSize(62, 35);
bt3.setLocation(595,263);
this.add(bt3);
bt4=new JButton("=");
bt4.setSize(55, 75);
bt4.setLocation(675,223);
this.add(bt4);
}
}
public class Test {
public static void main(String[] args) {
CalTest cal=new CalTest();
}
}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
