public class Ex3{

public class Ex3{
int x;
public static void main(String ar[])throws Exception{
int y=0;
Ex3 c=new Ex3();
try{
y=3/c.x;
y=y+1;}catch(Exception e){
System.out.println("errors occur!");
System.out.println("getMessage="+e.getMessage());
System.out.println("toString="+e.toString());}
System.out.println("program ends ok");
System.out.println("the y is:"+y);
}
}
注释一下每行,不太懂try catch的用法