Free Oracle 1Z0-501 Exam Dumps Questions & Answers

What writes the text "<end>" to the end of the file "file.txt"?

• A.OutputStream os= new FileOutputStream ("file.txt", true);
  DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");
• B.OutputStream os= new FileOutputStream ("file.txt");
  DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");
• C.OutputStream os= new OutputStream ("file.txt", true);
  DataOutputStream out = new DataOutputStream(os); out.writeBytes ("<end>/n");
• D.OutputStream out= new FileOutputStream ("file.txt");
  Out.writeBytes ("<end>/n");

Given:
1 . public class Test {
2 . public static void main (String [] args){
3 . string foo = "blue";
4 . string bar = foo;
5 . foo = "green";
6 . System.out.printIn(bar);
7 .}
8 . }
What is the result?

• A.The program prints "null"
• B.The program prints "blue"
• C.The program prints "green"
• D.An exception is thrown.
• E.The code will not compile.

Which two statements are true regarding the creation of a default constructor? (Choose Two)

• A.The default constructor initializes the instance variables declared in the class.
• B.When a class has only constructors with parameters, the compiler does not create a defaultconstructor.
• C.The compiler always creates a default constructor for every class.
• D.The default constructor invokes the no-parameter constructor of the superclass.
• E.The default constructor initializes method variables.

CORRECT TEXT
Exhibit:
1 . Public class test (
2 . Public static void stringReplace (String text)(
3 .Text = text.replace ('j' , 'i');
4 . )
5 .
6 . public static void bufferReplace (StringBuffer text)(
7 .text = text.append ("C")
8 . )
9 .
1 0. public static void main (String args[]} (
1 1.String textString = new String ("java");
1 2.StringBuffer text BufferString = new StringBuffer ("java");
1 3.
1 4.stringReplace (textString);
1 5.BufferReplace (textBuffer);
1 6.
1 7.System.out.printIn (textString + textBuffer);
1 8.}
1 9.)
What is the output?

Which two demonstrate encapsulation of data? (Choose Two)

• A.Methods provide for access and modification of data.
• B.Member data can be modified directly.
• C.Member data have no access modifiers.
• D.The access modifier to member data is private.
• E.The access modifier for methods is protected.