1z1-815 試験問題を無料オンラインアクセス

Given:
/code/a/Test.java
containing:

and
/code/b/Best.java
containing:
package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

• A.javac -d /code /code/a/Test.java
• B.javac -d /code /code/a/Test.java /code/b/Best.java
• C.java -cp /code a.Test
• D.java /code/a/Test.java /code/b/Best.java
• E.java /code/a/Test.java
• F.javac -d /code /code/a/Test

What is the result?
boolean log3 = ( 5.0 != 6.0) && ( 4 != 5);
boolean log4 = (4 != 4) || (4 == 4);
System.out.println("log3:"+ log3 + \nlog4" + log4);

• A.log3:true
  log4:true
• B.log3:true
  log4:false
• C.log3:false
  log4:true
• D.log3:false
  log4:false

Given:

What is the result?

• A.Tuesday
  Unknown
• B.Working
  Unknown
• C.Working
• D.Unknown
• E.Tuesday
• F.The compilation fails.

Given:

What is the output?

• A.I am an object array
• B.I am an object
• C.The compilation fails due to an error in line 1.
• D.I am an array

Given:

executed with this command:
java Main one two three
What is the result?

• A.0). one
  1). two
  2). three
• B.It creates an infinite loop printing:
  0). one
  1). two
  1). two
  ...
• C.A java.lang.NullPointerException is thrown.
• D.0). one
• E.The compilation fails.