求助！拜托，如下题java编写(っ╥╯﹏╰╥c) 这倒物理题怎么做急急急给评(っ╥╯﹏╰╥c)
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\u22349=a*3² \u2234a=1
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\uff082\uff09
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S\u25b3OAB=S\u25b3BOD+S\u25b3BDA
\u5728S\u25b3BOD\u4e2d\uff0cBD=4/3 BD\u8fb9\u4e0a\u7684\u9ad8\u4e3a1
\u2234S\u25b3BOD=1/2*BD*1=2/3
S\u25b3BDA=1/2*BD*8=16/3\u3001
\u2234S\u25b3OBA=6
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6.\u5c0f\u7acb\u65b9\u4f53\u7684\u91cd\u529bG\u5c0f=F\u6d6e\u603b-G\u6728=10N-6N=4N
7.\u5c0f\u7acb\u65b9\u4f53\u7684\u8d28\u91cfm=G/g=4N/10N/kg=0.4kg
8.\u5c0f\u7acb\u65b9\u4f53\u7684\u5bc6\u5ea6\u03c1=m/V=0.4kg/2x10-3=0.8x10 3kg/m3
代码Test.java
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class Test {
public static String strInfo(){
Scanner sc = new Scanner(System.in);
String name, sex, bj, info;
int age;
System.out.print("输入姓名: ");
name = sc.next();
System.out.print("输入性别: ");
sex = sc.next();
System.out.print("输入班级: ");
bj = sc.next();
System.out.print("输入年龄: ");
age = sc.nextInt();
info = "姓名: " + name + ". 性别: " +
sex + ". 班级: " + bj + ". 年龄: " + age;
return info;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
File file = new File("c:\\1.txt");
FileWriter fw = null;
try {
fw = new FileWriter(file);
String str = strInfo();
System.out.println("学生信息为: " + str);
fw.write(str);
fw.write("
");
fw.flush();
System.out.print("是否输入另一位你左边或右边的同学信息: (y / n)");
String isInput = sc.nextLine();
if(isInput.equals("n") || isInput.equals("N")){
System.exit(0);
}
if(isInput.equals("y") || isInput.equals("Y")){
String newStr = strInfo();
System.out.println("学生信息为: " + newStr);
fw.write(newStr);
fw.write("
");
fw.flush();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
if(fw != null){
try {
fw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
运行后会在c盘生成1.txt文件，内容：
那你得先告诉我你的姓名 性别 年龄 班级呀 → 。→
绛旓細浠ｇ爜Test.java import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.util.Scanner;public class Test {public static String strInfo(){Scanner sc = new Scanner(System.in);String name, sex, bj, info;int age;System.out.print("杈撳叆濮撳悕: ");name = sc....
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绛旓細/ private String number;/ 浜у搧鍚嶇О / private String name;/ 浜у搧鍗曚环 / private double price;/ 浜у搧搴撳瓨 / private int inventory;/ 鏋勯犳柟娉曚竴 / public Product() { } / 鏋勯犳柟娉曚簩 / public Product(String number) { this.number = number;} / 杈撳嚭浜у搧淇℃伅 / public void getInfo()...
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