myfilereader.java

对于CPU线程调度的模拟

package simcpu;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class MyFileReader {

	FileInputStream fis;
	
	public MyFileReader(String file) throws FileNotFoundException {
		fis=new FileInputStream(file);
	}

	public int readInt() throws IOException {
		char c;
		StringBuffer s=new StringBuffer();
		while(!check(c=(char)fis.read()));
		do {
			s.append(c);
		} while(check(c=(char)fis.read()));
		return Integer.parseInt(s.toString());
	}

	private boolean check(char c) {
		return c>='0' && c<='9';
	}

}