格林模拟试题一（上）(4)

   
question 14) 
which of the following lines of code will compile without error  
1)  
int i=0;if(i) { system.out.println("hello"); } 
2)  
boolean b=true;boolean b2=true;if(b==b2) { system.out.println("so true"); } 
3)  
int i=1;int j=2;if(i==1|| j==2) system.out.println("ok"); 
4)  
int i=1;int j=2;if(i==1 &| j==2) system.out.println("ok"); 
question 15) 
what will be output if you try to compile and run the following code, but there is no file called hello.txt in the current directory?.  
import java.io.*;public class mine {   public static void main(string argv){ mine m=new mine(); system.out.println(m.amethod());   }   public int amethod() { try {   fileinputstream dis=new fileinputstream("hello.txt"); }catch (filenotfoundexception fne) {   system.out.println("no such file found");   return -1; }catch(ioexception ioe) { } finally{   system.out.println("doing finally"); } return 0;   }} 
1) no such file found  
2 no such file found ,-1  
3) no such file found, doing finally, -1