【自动化__持续集成】___java___代码空指针

一、代码如下

package www.wujianbotwo;

public class Demo01 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		People p= null;
		//p.eat();
		String s= null;
		//s.charAt(0);
		//System.out.println(s.length());
		System.out.println(s.hashCode());
	}

}


class People{
	public void eat() {
		// TODO Auto-generated method stub
		System.out.println("吃饭");
	}
}