op3.java

适合初学者的JAVA教程~结合例子讲解~容易理解~

package mp;
import java.io.*;
public class Op3 {
    public static String op() throws IOException{
     BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
     String s;  //不能用字符串对象作read方法的参量
     System.out.flush();
     s=br.readLine();
     return s;
    }
    
    public static int intValue() throws IOException{
     System.out.print("键入一个整数，按回车键结束：");
     String s=op();
     int a=Integer.parseInt(s);
     return a;
     	
    }
    public static float floatValue() throws IOException{
     System.out.print("键入一个单精度浮点数，按回车键结束：");
     String s=op();
     float a=Float.parseFloat(s);
     return a;
     	
    }
    public static String StringValue() throws IOException{
     System.out.print("键入一个字符串，按回车键结束：");
     String s=op();     
     return s;
     	
    }
    
}