myrate.java

来自「java安全性编程实例电子版书附源码,是网络安全编程者不可多得的好书」· Java 代码 · 共 17 行

package my.test;
import java.io.*;
public class MyRate{
     private double rate=0.8;
     public void setRate(double r){
      	SecurityManager sm = System.getSecurityManager();
	if (sm != null) {
	          sm.checkPermission(new RatePermission("setR"));
	}
          rate=r;
     }

     public double getRate( ){
        return rate;
     }
}