stack.push(String.valueOf(num)); stack.push(String.valueOf(ch)); num= 0; } start++; }if(!stack.isEmpty() && (stack.peek().equals("*") || stack.peek().equals("/"))){ String str=stack.pop();intnum2 =Integer.valueOf(stack.pop());if(str.equals("*")){ num= num *num2...
import java.util.*; public class StringCalculator { public int add(String numbers) { if (numbers == null || numbers.isEmpty()) { return 0; } String delimiter = ",|\n"; if (numbers.startsWith("//")) { int delimiterIndex = numbers.indexOf("\n"); delimiter = numbers.substring(2...
return number1 / number2; }}public class TestCalculator { public static void main(String[] args) { Calculator calculator = new Calculator(5, 2); System.out.println(calculator.add()); System.out.println(calculator.subtract()); System.out.println(calculator.multiple()); System.out.println(cal...
public void setDefaultBandingPropertyScope(java.lang.String pDefaultBandingPropertyScope)getDefaultBandingPropertyScopepublic java.lang.String getDefaultBandingPropertyScope()getBandedDiscountCalculatorHelperpublic BandedDiscountCalculatorHelper getBandedDiscountCalculatorHelper()...
(String[] args) {15Calculator calculator =newCalculator();1617calculator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);18calculator.pack();19calculator.setLocationRelativeTo(null);20calculator.setVisible(true);21}2223privateCalculator() {24add(textPane, BorderLayout.NORTH);25add(numPane, BorderLayout...
import java.util.Scanner; public class JCM { public static void main(String[] args) { Scanner o = new Scanner(System.in); System.out.println("Simple Calculator"); System.out.println("==="); System.out.print("Enter the first number: "); double num1 = o.nextDouble(); System.out...
The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division should truncate toward zero. You may assume that the given expression is always valid. Some examples: "3+2*2" = 7 " 3/2 " = 1 " 3+5 / 2 " = 5 ...
{ return a/b; } } import java.util.Scanner; public class CalculatorTest { public static void main(String[] args) { Calculator c = new Calculator(); Scanner sc = new Scanner(System.in); System.out.println("请输入你要执行的操作:1.加法 2.减法 3.乘法 4.除法"); int method = sc....
public static final String CATEGORY_APP_CALCULATOR = "android.intent.category.APP_CALCULATOR"; 在6.4节的例子中曾使用了显式的方式调用Calculator,这一点从本节给出的Calculator类的声明代码中更容易理解。不过笔者仍然建议尽可能使用隐式方式调用系统的窗口,除非别无选择,才使用显式的方式调用窗口。
用java编写的计算器(Calculator) import java.io.*; import java.awt.*; import java.awt.event.*; import java.util.*; public class Calculator { public static void main(String[] args) { new MyfirstCalculator(); } } class MyfirstCalculator { Frame f=new Frame("calculator"); TextField tf=...