小学生四则运算
作者:互联网
PSP:
psp | 任务内容 | 计划完成需要的时间(min) | 实际完成需要的时间(min) |
---|---|---|---|
Planning | 计划 | 30 | 40 |
Estimate | 估计这个任务需要多少时间,并规划大致工作步骤 | 30 | 20 |
Development | 开发 | 120 | 150 |
Analysis | 需求分析(包括学习新技术) | 45 | 20 |
Design Spec | 生成设计文档 | 20 | 0 |
Coding Standard | 代码规范 | 10 | 10 |
Design | 具体设计 | 15 | 22 |
Coding | 具体编码 | 40 | 35 |
Code Review | 代码复审 | 10 | 1 |
Test | 测试(自我测试,修改代码,提交修改) | 20 | 20 |
Reporting | 报告 | 10 | 10 |
Test Report | 测试报告 | 15 | 10 |
代码:
package text; import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.util.*; public class Chuti{ public static void main (String args[]) { new WinJFrame(); } } class WinJFrame extends JFrame{ public WinJFrame(){ setBounds(400,200,600,400); setTitle("小学生四则运算练习器"); setLayout(null); Container con = getContentPane(); con.setBackground(new Color(255,218,185)); init(); setVisible(true); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public int getPlus(String s) { String regex = "[^0123456789.]+"; s=s.replaceAll(regex, "#"); StringTokenizer fenxi = new StringTokenizer(s,"#"); int sum = 0; while(fenxi.hasMoreTokens()) { String item = fenxi.nextToken(); int h =Integer.parseInt(item); sum = sum + h; } return sum; } public int getMinus(String s) { String regex = "[^0123456789.]+"; s=s.replaceAll(regex, "#"); StringTokenizer fenxi = new StringTokenizer(s,"#"); int sum = 0; int ss[]; ss=new int[2]; for(int i=0;fenxi.hasMoreTokens();i++) { String item = fenxi.nextToken(); ss[i]=Integer.parseInt(item); } sum=ss[0]-ss[1]; return sum; } public int getMultiply(String s) { String regex = "[^0123456789.]+"; s=s.replaceAll(regex, "#"); StringTokenizer fenxi = new StringTokenizer(s,"#"); int sum = 0; int ss[]; ss=new int[2]; for(int i=0;fenxi.hasMoreTokens();i++) { String item = fenxi.nextToken(); ss[i]=Integer.parseInt(item); } sum=ss[0]*ss[1]; return sum; } public int getDivision(String s) { String regex = "[^0123456789.]+"; s=s.replaceAll(regex, "#"); StringTokenizer fenxi = new StringTokenizer(s,"#"); int sum = 0; int ss[]; ss=new int[2]; for(int i=0;fenxi.hasMoreTokens();i++) { String item = fenxi.nextToken(); ss[i]=Integer.parseInt(item); } sum=ss[0]/ss[1]; return sum; } void init() { JButton b[] = new JButton[12]; for(int k=0;k<12;k++) { b[k] = new JButton(); add(b[k]); } b[0].setBounds(20,20,100,30); b[0].setText("加法"); b[1].setBounds(460,20,100,30); b[1].setText("换题"); b[2].setBounds(20,60,100,30); b[2].setText("确认答案"); b[3].setBounds(20,100,100,30); b[3].setText("减法"); b[4].setBounds(460,100,100,30); b[4].setText("换题"); b[5].setBounds(20,140,100,30); b[5].setText("确认答案"); b[6].setBounds(20,180,100,30); b[6].setText("乘法"); b[7].setBounds(460,180,100,30); b[7].setText("换题"); b[8].setBounds(20,220,100,30); b[8].setText("确认答案"); b[9].setBounds(20,260,100,30); b[9].setText("除法"); b[10].setBounds(460,260,100,30); b[10].setText("换题"); b[11].setBounds(20,300,100,30); b[11].setText("确认答案"); JTextArea ja0 = new JTextArea(); JTextArea ja1 = new JTextArea(); JTextArea ja2 = new JTextArea(); JTextArea ja3 = new JTextArea(); ja0.setBounds(120, 20, 340, 30); ja0.setFont(new Font("黑体",Font.BOLD,30)); add(ja0); ja1.setBounds(120, 100, 340, 30); ja1.setFont(new Font("黑体",Font.BOLD,30)); add(ja1); ja2.setBounds(120, 180, 340, 30); ja2.setFont(new Font("黑体",Font.BOLD,30)); add(ja2); ja3.setBounds(120, 260, 340, 30); ja3.setFont(new Font("黑体",Font.BOLD,30)); add(ja3); JTextField jt0 = new JTextField(); JTextField jt1 = new JTextField(); JTextField jt2 = new JTextField(); JTextField jt3 = new JTextField(); jt0.setBounds(120, 60, 340, 30); jt0.setFont(new Font("黑体",Font.BOLD,30)); add(jt0); jt1.setBounds(120, 140, 340, 30); jt1.setFont(new Font("黑体",Font.BOLD,30)); add(jt1); jt2.setBounds(120, 220, 340, 30); jt2.setFont(new Font("黑体",Font.BOLD,30)); add(jt2); jt3.setBounds(120, 300, 340, 30); jt3.setFont(new Font("黑体",Font.BOLD,30)); add(jt3); for(int j=0;j<2;j++) { b[j].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int number1,number2; number1=(int)Math.ceil(Math.random()*100); number2=(int)Math.ceil(Math.random()*100); ja0.setText(number1+"+"+number2+"="); } }); } for(int j=3;j<5;j++) { b[j].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int number1,number2; number1=(int)Math.ceil(Math.random()*100); number2=(int)Math.ceil(Math.random()*100); ja1.setText(number1+"-"+number2+"="); } }); } for(int j=6;j<8;j++) { b[j].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int number1,number2; number1=(int)Math.ceil(Math.random()*100); number2=(int)Math.ceil(Math.random()*100); ja2.setText(number1+"*"+number2+"="); } }); } for(int j=9;j<11;j++) { b[j].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int number1,number2; number1=(int)Math.ceil(Math.random()*100); number2=(int)Math.ceil(Math.random()*100); ja3.setText(number1+"/"+number2+"="); } }); } b[2].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(getPlus(ja0.getText())==Integer.parseInt(jt0.getText())){ JOptionPane.showMessageDialog(jt0,"答案正确","判定结果",JOptionPane.INFORMATION_MESSAGE); } else{ JOptionPane.showMessageDialog(jt0,"答案错误","判定结果",JOptionPane.WARNING_MESSAGE); } } }); b[5].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(getMinus(ja1.getText())==Integer.parseInt(jt1.getText())){ JOptionPane.showMessageDialog(jt1,"答案正确","判定结果",JOptionPane.INFORMATION_MESSAGE); } else{ JOptionPane.showMessageDialog(jt1,"答案错误","判定结果",JOptionPane.WARNING_MESSAGE); } } }); b[8].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(getMultiply(ja2.getText())==Integer.parseInt(jt2.getText())){ JOptionPane.showMessageDialog(jt2,"答案正确","判定结果",JOptionPane.INFORMATION_MESSAGE); } else{ JOptionPane.showMessageDialog(jt2,"答案错误","判定结果",JOptionPane.WARNING_MESSAGE); } } }); b[11].addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(getDivision(ja3.getText())==Integer.parseInt(jt3.getText())){ JOptionPane.showMessageDialog(jt3,"答案正确","判定结果",JOptionPane.INFORMATION_MESSAGE); } else{ JOptionPane.showMessageDialog(jt3,"答案错误","判定结果",JOptionPane.WARNING_MESSAGE); } } }); } }
测试:
标签:String,fenxi,int,sum,四则运算,ss,new,小学生 来源: https://www.cnblogs.com/serene-zou/p/15345882.html