1Z0-501 試験問題を無料オンラインアクセス

Given:
1. public class foo {
2 . static String s;
3 . public static void main (String[]args) {
4 . system.out.printIn ("s=" + s);
5 . }
6 . }
What is the result?

• A.The code does not compile because string s is not initialized.
• B.The code compiles, but a NullPointerException is thrown when toString is called.
• C.The code does not compile because string s cannot be referenced.
• D.The code compiles and "s=" is printed.
• E.The code compiles and "s=null" is printed.

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

Which method in the Thread class is used to create and launch a new thread of execution?

• A.Start(Runnable r);
• B.Run(Runnable r);
• C.Start();
• D.Execute();
• E.Execute(Thread t);
• F.Run();

Given:
1 . public class Foo {
2 . public static void main (String []args) {
3 . int i = 1;
4 . int j = i++;
5 . if ((i>++j) && (i++ ==j)){
6 .i +=j;
7 .}
8 .}
9 .}
What is the final value of i?

• A.4
• B.1
• C.5
• D.3
• E.2

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?