import java.io.*;
public class Read{public static void main(String[] args) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please insert a integer");
int a = Integer.parseInt(br.readLine());
System.out.println("You input :"+a);
}
}
////////////////
///BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please insert a integer");
int a = Integer.parseInt(br.readLine()); /////
需要这样定义么?这里的throws IOException 什么意思?
有没有象C++中类似cin>>这样的函数?
public class Read{public static void main(String[] args) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please insert a integer");
int a = Integer.parseInt(br.readLine());
System.out.println("You input :"+a);
}
}
////////////////
///BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please insert a integer");
int a = Integer.parseInt(br.readLine()); /////
需要这样定义么?这里的throws IOException 什么意思?
有没有象C++中类似cin>>这样的函数?
如果你用JDK1.5,它的scanner有些类同C++中cin
import java.util;
public class Example
{
public static void main(String args[])
{
System.out.println(“请输入若干个数,每输入一个数用回车确认”);
Sytem.out.println(“最后输入一个非数字结束输入操作”);
Scanner reader=new Scanner(System.in);
double sum=0;
int m=0;
while(reader.hasNextDouble())
{
double x=reader.nextDouble();
m=m+1;
sum=sum+x;
}
System.out.print(“%d个数的和为%f\n”,m,sum);
System.out.print(“%d个数的平均值是%f\n”,m,sum/m);
}
}
加try{
}catch( IOException e ){ }