1Z0-501 試験問題を無料オンラインアクセス

Given:
1 . public class X (
2 . public object m () {
3 . object o = new float (3.14F);
4 . object [] oa = new object [1];
5 . oa[0]= o;
6 . o = null;
7 . return oa[0];
8 . }
9 . }
When is the float object created in line 3, eligible for garbage collection?

• A.Just after line 6
• B.Just after line 5
• C.Just after line 7 (that is, as the method returns)
• D.Never in this method.

Which statements about static inner classes are true? (Choose Two)

• A.Static members of a static inner class can be referenced using the class name of the static innerclass.
• B.A static inner class has no reference to an instance of the enclosing class.
• C.A static inner class has access to the non-static members of the outer class.
• D.A static inner class requires a static initializer.
• E.A static inner class requires an instance of the enclosing class.

Given:
1 . class BaseClass{
2 . private float x= 1.0f;
3 . protected void setVar (float f) {x = f;}
4 . }
5 . class SubClass exyends BaseClass {
6 . private float x = 2.0f;
7 . //insert code here
8 .}
Which two are valid examples of method overriding? (Choose Two)

• A.Protected float setVar() {x=3.0f; return 3.0f; }
• B.Void setVar(float f) {x = f;}
• C.Public void setVar(int f) {x = f;}
• D.Public void setVar(float f) {x = f;}
• E.Public final void setVar(float f) {x = f;}
• F.Public double setVar(float f) {x = f;}

Given:
Integer i = new Integer (42);
Long 1 = new Long (42);
Double d = new Double (42.0);
Which two expressions evaluate to True? (Choose Two)

• A.(d.equals (i))
• B.(i.equals (d))
• C.(i.equals (42))
• D.(i ==1)
• E.(d == 1)
• F.(i == d)

CORRECT TEXT
Given
1 . Public class test (
2 .Public static void main (String args[])(
3 .System.out.printIn (6 ^ 3);
4 .)
5 .)
What is the output?