7.10nullexceptiondemo.java

JAVA程序设计的源代码

public class NullExceptionDemo{
void start(){}
public static void main(String[] args){
NullExceptionDemo exceptionDemo=null;
try{
exceptionDemo.start();
System.out.println("start car");
} catch(NullPointerException e){    //捕获空指针的异常
System.out.println("Got exception:"+e.getMessage());
} finally{
System.out.println("Finally code block");
}
}
}