JAVA取整计算器源码

package com; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; public class WorkOut implements ActionListener{ MainPanel hf; int num2 = 0,b = 0; int num; int op; String a; String StringNum = ""; boolean newNum = false; boolean newOp = true; boolean newResualt = false; public WorkOut(MainPanel hf){ this.hf = hf; } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(((JButton)e.getSource()).equals(hf.buttons[0])){ a = "7"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[1])){ a = "8"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[2])){ a = "9"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[3])){ op = 1;//"+"; workOp(); } if(((JButton)e.getSource()).equals(hf.buttons[4])){ a = "4"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[5])){ a = "5"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[6])){ a = "6"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[7])){ op = 2;//"-"; workOp(); } if(((JButton)e.getSource()).equals(hf.buttons[8])){ a = "1"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[9])){ a = "2"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[10])){ a = "3"; workNum(); } if(((JButton)e.getSource()).equals(hf.buttons[11])){ op = 3;//"*"; workOp(); } if(((JButton)e.getSource()).equals(hf.buttons[12])){ a = "0"; workNum0(); } if(((JButton)e.getSource()).equals(hf.buttons[13])){ clearall(); } if(((JButton)e.getSource()).equals(hf.buttons[14])){ op = 4;//"/"; workOp(); } if(((JButton)e.getSource()).equals(hf.buttons[15])){ resualt(); } } private void resualt() { // TODO Auto-generated method stub if(newResualt == true){ switch (op){ case 0: break; case 1: num = Integer.parseInt(StringNum)+num; break; case 2: num = num-Integer.parseInt(StringNum); break; case 3: num = num*Integer.parseInt(StringNum); break; case 4: num = num/Integer.parseInt(StringNum); break; } } newNum = true; newResualt = false; StringNum = Integer.toString(num); showNums(); } private void workOp() { // TODO Auto-generated method stub if(newOp){ op = 0; return; } newNum = true; } private void workNum0() { // TODO Auto-generated method stub if(hf.showNum.getText() != "0"){ workNum(); } } private void clearall() { // TODO Auto-generated method stub StringNum = "0"; showNums(); newNum = true; } private void workNum() { // TODO Auto-generated method stub newOp = false; if(hf.showNum.getText() == "0"){ StringNum = ""; showNums(); } if(newNum == false){ StringNum = StringNum+a; showNums(); // newResualt = true; } if(newNum == true){ num = Integer.parseInt(StringNum); StringNum = a; showNums(); newNum = false; newResualt = true; } } private void showNums() { // TODO Auto-generated method stub hf.showNum.setText(StringNum); } }