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【stl源码剖析】【ue4源码】【ue4 源码】java sqrt源码

2024-12-24 03:47:27 来源：电视源码播放器分类：综合

1.用JAVA编写的源码科学计算器源代码
2.用java求两个圆关系的代码，，源码求完整的源码，正确的源码源代码，谢谢！源码！源码stl源码剖析
3.求一个JAVA计算器源代码。源码不要按钮的源码那种。速度。源码。源码急用
4.java 写的源码计算器源代码只实现加减乘除四则运算即可
5.JAVA课程设计计算器的源代码

java sqrt源码

用JAVA编写的科学计算器源代码

以下是一个简单的用Java编写的科学计算器的源代码示例：

java

import java.util.Scanner;

public class ScientificCalculator {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.println("Welcome to the Scientific Calculator!");

System.out.println("Enter 'add', 'subtract', 'multiply', 'divide', 'sin', 'cos', 'tan', 'log', 'exp', 'sqrt', or 'quit' to exit.");

while (true) {

System.out.print("Enter operation (e.g., add 2 3): ");

String operation = scanner.nextLine();

if (operation.equalsIgnoreCase("quit")) {

break;

}

String[] parts = operation.split(" ");

double num1 = Double.parseDouble(parts[1]);

double num2 = Double.parseDouble(parts[2]);

switch (parts[0].toLowerCase()) {

case "add":

System.out.println(num1 + " + " + num2 + " = " + (num1 + num2));

break;

case "subtract":

System.out.println(num1 + " - " + num2 + " = " + (num1 - num2));

break;

case "multiply":

System.out.println(num1 + " * " + num2 + " = " + (num1 * num2));

break;

case "divide":

if (num2 != 0) {

System.out.println(num1 + " / " + num2 + " = " + (num1 / num2));

} else {

System.out.println("Error: Division by zero is not allowed.");

}

break;

case "sin":

System.out.println("sin(" + num1 + ") = " + Math.sin(Math.toRadians(num1)));

break;

case "cos":

System.out.println("cos(" + num1 + ") = " + Math.cos(Math.toRadians(num1)));

break;

case "tan":

System.out.println("tan(" + num1 + ") = " + Math.tan(Math.toRadians(num1)));

break;

case "log":

System.out.println("log(" + num1 + ") = " + Math.log(num1));

break;

case "exp":

System.out.println("exp(" + num1 + ") = " + Math.exp(num1));

break;

case "sqrt":

if (num1 >= 0) {

System.out.println("sqrt(" + num1 + ") = " + Math.sqrt(num1));

} else {

System.out.println("Error: Cannot calculate the square root of a negative number.");

}

break;

default:

System.out.println("Error: Invalid operation.");

break;

}

scanner.close();

System.out.println("Goodbye!");

}

这个科学计算器支持基本的四则运算（加、减、源码乘、源码除）以及一些科学运算（正弦、源码余弦、源码ue4源码正切、对数、指数和平方根）。用户可以通过输入相应的操作和两个数字来执行计算。例如，输入“add 2 3”将计算2加3的结果。

代码首先导入了`Scanner`类，ue4 源码用于从用户处获取输入。然后，在`main`方法中，创建了一个`Scanner`对象，用于读取用户的输入。程序通过一个无限循环来持续接收用户的输入，直到用户输入“quit”为止。云购源码

在循环中，程序首先提示用户输入一个操作，然后读取用户的输入并将其分割为多个部分。接着，程序将第二个和第三个部分转换为`double`类型的数字，并根据第一个部分（即操作）执行相应的计算。

程序使用`switch`语句来根据用户输入的discuz源码操作执行相应的计算。对于基本的四则运算，程序直接执行相应的计算并输出结果。对于科学运算，程序使用了Java的`Math`类中的相应方法。例如，对于正弦运算，程序使用了`Math.sin`方法，并将角度转换为弧度作为参数传递给它。

如果用户输入了无效的操作或无效

用java求两个圆关系的代码，，求完整的，正确的源代码，谢谢！！

public class Cycle {

private double x = 0;//圆心横坐标

private double y = 0;//圆心纵坐标

private double r = 0;//圆心半径

public static void main(String[] args) {

String relation = "";

Cycle c = new Cycle(0,0,1);

//相交外切内切相离

Cycle c_xiangJiao = new Cycle(3,4,5);

Cycle c_waiQie = new Cycle(3,4,4);

Cycle c_neiQie = new Cycle(3,4,6);

Cycle c_xiangLi = new Cycle(3,4,2);

relation = c.relationWithOtherCycle(c_xiangJiao);

System.out.println("c && c_xiangJiao relationShip ："+relation);

relation = c.relationWithOtherCycle(c_xiangLi);

System.out.println("c && c_xiangLi relationShip ："+relation);

relation = c.relationWithOtherCycle(c_neiQie);

System.out.println("c && c_neiQie relationShip ："+relation);

relation = c.relationWithOtherCycle(c_waiQie);

System.out.println("c && c_waiQie relationShip ："+relation);

}

public Cycle(double x, double y, double r) {

this.r = r;

this.x = x;

this.y = y;

}

public Cycle() {

}

public String relationWithOtherCycle(Cycle c){

String relation = ""; //相交外切内切相离

double length = 0;// (x-x1)*(x-x1)+(y-y1)*(y-y1) 开平方

length = Math.sqrt((this.x-c.getX())*(this.x-c.getX())+(this.y-c.getY())*(this.y-c.getY()));

//System.out.println("length : "+length);

if(length>(this.r+c.getR())){

relation = "相离";

}else if (length==(this.r+c.getR())){

relation = "外切";

}else if (length==Math.abs(this.r-c.getR())){

relation = "内切";

}else if (length<Math.abs(this.r+c.getR())&&length>Math.abs(this.r-c.getR())){

relation = "相交";

}

return relation;

}

public double getX() {

return x;

}

public void setX(double x) {

this.x = x;

}

public double getY() {

return y;

}

public void setY(double y) {

this.y = y;

}

public double getR() {

return r;

}

public void setR(double r) {

this.r = r;

}

//把测试程序写在Cycle的main方法里了

求一个JAVA计算器源代码。不要按钮的那种。速度。。急用

import java.awt.*;

import java.awt.event.*;

import java.lang.*;

import javax.swing.*;

public class Counter extends Frame

{

//声明三个面板的布局

GridLayout gl1,gl2,gl3;

Panel p0,p1,p2,p3;

JTextField tf1;

TextField tf2;

Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,b,b,b,b,b,b,b,b,b,b,b,b,b,b,b,b,b;

StringBuffer str;//显示屏所显示的字符串

double x,y;//x和y都是运算数

int z;//Z表示单击了那一个运算符.0表示"+",1表示"-",2表示"*",3表示"/"

static double m;//记忆的数字

public Counter()

{

gl1=new GridLayout(1,4,,0);//实例化三个面板的布局

gl2=new GridLayout(4,1,0,);

gl3=new GridLayout(4,5,,);

tf1=new JTextField();//显示屏

tf1.setHorizontalAlignment(JTextField.RIGHT);

tf1.setEnabled(false);

tf1.setText("0");

tf2=new TextField();//显示记忆的索引值

tf2.setEditable(false);

//实例化所有按钮、设置其前景色并注册监听器

b0=new Button("Backspace");

b0.setForeground(Color.red);

b0.addActionListener(new Bt());

b1=new Button("CE");

b1.setForeground(Color.red);

b1.addActionListener(new Bt());

b2=new Button("C");

b2.setForeground(Color.red);

b2.addActionListener(new Bt());

b3=new Button("MC");

b3.setForeground(Color.red);

b3.addActionListener(new Bt());

b4=new Button("MR");

b4.setForeground(Color.red);

b4.addActionListener(new Bt());

b5=new Button("MS");

b5.setForeground(Color.red);

b5.addActionListener(new Bt());

b6=new Button("M+");

b6.setForeground(Color.red);

b6.addActionListener(new Bt());

b7=new Button("7");

b7.setForeground(Color.blue);

b7.addActionListener(new Bt());

b8=new Button("8");

b8.setForeground(Color.blue);

b8.addActionListener(new Bt());

b9=new Button("9");

b9.setForeground(Color.blue);

b9.addActionListener(new Bt());

b=new Button("/");

b.setForeground(Color.red);