Java考试格林模拟题

时间:2020-10-17 15:12:53 JAVA认证 我要投稿

Java考试格林模拟题

  question 14)

Java考试格林模拟题

  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

  4) 0

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