JAVA Certification SCJP : keyword

Question about keywords are often in SCJP exam.Be careful at C++ keyword that are different of JAVA keyword.The exam will try to make confuse about this.If you search, books and exercice,you can see that link : Certification Sun SCJP

These exercises will show common keyword question.

Exercise 1 :

Given the following :

public class Test {
public static void main(String [] args) {
System.out.println("Zest!");
}

public void assert {
System.out.println("Helllo");
}
}

What is the result ? (choose one)

A Zest!
B Helllo
C Compilation fails
D An exception is thrown at runtime


Exercice 2 :

Given the following :

public class Test {
public static void main(String [] args) {
System.out.println("Zest!");
int true = 1;
System.out.println("true : " + true);
}
}

What is the result ? (choose one)

A Zest!
B Zest true: 1
C Compilation fails
D An exception is thrown at runtime

Exercice 3 :

public class Test {
public static void main(String [] args) {
System.out.println("Zest!");
transient int value = 10;
System.out.println("true : " + true);
}
}

What is the result ? (choose one)

A Zest!
B Zest true: 1
C Compilation fails
D An exception is thrown at runtime

Solution :

Exercise 1 :

Compilation will fail because assert is a reserved keywords. Be careful at this sort of question.It's often in test and very easy to miss it

Exercise 2 :

Compilation will fail because you can't name variable with a keyword name.

Exercise 3 :

Compilation will fail.Transient keyword is an attribut of a class.It's used in serialisation.
Example :
class Writeable implements java.io.Serializable {
public transient int var1 = 4;
public int var2 = 19;
}