Java（2.1 2.13 4.21）

package com.atguigu.java;
import java.util.Scanner;
public class Homeworkone {
public static void main(String[] args){
Scanner input =new Scanner(System.in);
System.out.println(“Enter a degree for Celsius:”);
double Celsius=input.nextDouble();
double Fahrenheit=(9.0/5)Celsius+32;
System.out.println(“Celsius”+Celsius+“is”+Fahrenheit+“in Fahrenheit” );
}
package com.atguigu.java;
import java.util.Scanner;
public class Homeworkone {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println(“Enter the monthly saving amount:”);
int i;
double Savingamount = input.nextDouble();
double Accontvalue=0;
for (i = 0; i < 6; i++) {
Accontvalue=(Savingamount+Accontvalue)(1 + 0.00417);
}
System.out.println(“After the sixth month,the account value is $” +(int)(Accontvalue*100)/100.0 );
}
}

package com.atguigu.java;
import java.util.Scanner;
public class Homeworkone {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println(“Please enter a SSN:”);
String SSN = input.nextLine();
String S1 = “[\d]{3}-[\d]{2}-[\d]{4}”;
if (SSN.matches(S1)) {
System.out.println(SSN +“is a valid social security number”);
}
else{
System.out.println(SSN +“is a invalid social security number”);
}
}
}

标签：Java,Scanner,System,println,java,2.1,2.13,public,out
来源： https://blog.csdn.net/weixin_49127517/article/details/115047814