到目前为止，我的代码在Java中是这样的。我在C中尝试过，我使用FFLUSH（）函数来做到这一点。 Java中是否有这样的功能可以做到这一点？
/**
*
*/
package UserInput;
import java.util.Scanner;
/**
* @author ypava
*
*/
public class UserInput {
private static Scanner s,p5,q5,p4,q4,p3,q3,p2,q2,p,q,ch;
//static float a,b,c;
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
//float a,b,c;
int choice;
String Rch;
do{
System.out.println("\t\t\t Menu");
System.out.println("\t 1.Addition");
System.out.println("\t 2.Subtraction");
System.out.println("\t 3.Multiplication");
System.out.println("\t 4.Division");
System.out.println("\t 5.Modulus");
System.out.println("");
System.out.println("Please Enter Your Choice");
s = new Scanner(System.in);
choice=s.nextInt();
switch(choice)
{
case 1:
{
System.out.println("Enter the Values of a & b");
p5 = new Scanner(System.in);
float a=p5.nextFloat();
q5 = new Scanner(System.in);
float b= q5.nextFloat();
float c=a+b;
System.out.println("The Sum is: \t" +c);
break;
}
case 2:
{
System.out.println("Enter the Values of a & b");
p4 = new Scanner(System.in);
float a=p4.nextFloat();
q4 = new Scanner(System.in);
float b= q4.nextFloat();
float c=a-b;
System.out.println("The Difference is: \t" +c);
break;
}
case 3:
{
System.out.println("Enter the Values of a & b");
p3 = new Scanner(System.in);
float a=p3.nextFloat();
q3 = new Scanner(System.in);
float b= q3.nextFloat();
float c=a*b;
System.out.println("The Multiplication is: \t" +c);
break;
}
case 4:
{
System.out.println("Enter the Values of a & b");
p2 = new Scanner(System.in);
float a=p2.nextFloat();
q2 = new Scanner(System.in);
float b= q2.nextFloat();
float c=a/b;
System.out.println("The Division is: \t" +c);
break;
}
case 5:
{
System.out.println("Enter the Values of a & b");
p = new Scanner(System.in);
float a=p.nextFloat();
q = new Scanner(System.in);
float b= q.nextFloat();
float c=a%b;
System.out.println("The Modulus is: \t" +c);
break;
}
default:
System.out.println("Wrong Option Entered");
break;
}
System.out.println("Do you Want to Perform any other operation Y/N");
ch = new Scanner(System.in);
Rch=ch.nextLine();
}while(Rch=="Y"|| Rch=="y");
}
}