Shulou(Shulou.com)06/02 Report--

This article mainly introduces how Java implements a simple calculator, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let Xiaobian take you to understand it together.

Let's look at the interface effect first:

The source code is as follows:

package test1; import java.awt.Frame;import java.awt.TextField;import java.awt.Button;import java.awt.Panel;import java.awt.GridLayout; import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent; import java.awt.event.ActionEvent;import java.awt.event.ActionListener;public class calculate { TextField tfResult; Button btNum[],btOper[],btPoint,btEqual,btBack,btSqrt,btPingfang,btLifang; int num1,num2;//operands char oper;//operator boolean isNum;//stands for digital flag bit public void init(){ Frame f; tfResult=new TextField(); btNum=new Button[10];//array object for(int i=0;i

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