import java.io.*;

public class InputExpression {
    //File fReader=new File("test.txt");
    File fReader;
    //Reader in=new FileReader(fReader);
    //BufferedReader buffRead=new BufferedReader(in);
    Reader in;
    BufferedReader buffRead;

    String str1;
    String str2;

    InputExpression(File file) throws IOException {//构造函数指定输出文件
        fReader = file;
        in = new FileReader(fReader);
        buffRead = new BufferedReader(in);
    }

    public void expInput() {
        try {

            str1 = buffRead.readLine();//写入计算机计算的表达式
            str2 = buffRead.readLine();//真分数的表达式
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void inClose() {
        try {
            buffRead.close();
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}