2020 Download Updated Oracle 1Z0-803 Dumps - 1Z0-803 Exam Study Material
                     Oracle
1Z0-803
Java SE 7 Programmer I
https://www.realexamcollection.com/oracle/1z0-803-dumps.html
 
QUESTION: 1  
Given the code fragment: 
Boolean b1 = true; Boolean b2 = false; int i = 0; 
while (foo) { } Which one is valid as a replacement for foo? 
 
 
A. b1.compareTo(b2) 
B. i = 1 
C. i == 2? -1 : 0 
D. "foo".equals("bar") 
 
 
Answer: D  
 
Explanation:  
Equals works fine on strings equals produces a Boolean value. 
 
 
QUESTION: 2  
Given: 
 
 
 
The class is poorly encapsulated. Y ou need to change the c ircle cl ass to compute an d return 
the area instead. W hich two modifications are necessary to ens ure that the class  is being 
properly encapsulated? 
 
 
A. Remove the area field. 
B. Change the getArea( ) method as follows: 
public double getArea ( ) { return Match.PI * radius * radius; } 
C. Add the following method: 
public double getArea ( ) {area = Match.PI * radius * radius; }  
D. Change the cacess modifier of the SerRadius ( ) method to be protected. 
 
 
Answer: B, D 
 
 
QUESTION: 3  
Given the code fragment 
 
 
 
Which code fragments, inserted independently, enable the code compile? 
 
 
A. t.fvar = 200; 
B. cvar = 400; 
C. fvar = 200; cvar = 400; 
D. this.fvar = 200; this.cvar = 400; 
E. t.fvar = 200; Test2.cvar = 400; 
F. this.fvar = 200; Test2.cvar = 400; 
 
 
Answer: B 
 
 
QUESTION: 4  
public class StringReplace { 
public static void main(String[] args) { String message = "Hi everyone!";  
System.out.println("message = " + message.replace("e", "X")); }  
} 
What is the result? 
 
 
A. message = Hi everyone! 
B. message = Hi XvXryonX! 
C. A compile time error is produced. 
D. A runtime error is produced. 
E. message = 
F. message = Hi Xveryone!  
 
 
Answer: B 
 
 
QUESTION: 5  
Given: 
class Base { 
// insert code here 
} 
public class  Derived e xtends Base{ p ublic st atic void main(String[] arg s) { Derived obj =  
new Derived(); obj.setNum(3); 
System.out.println("Square = " + obj.getNum() * obj.getNum());  
} 
} 
Which two options, when inserted independently inside class Base, ensure that the class is  
being properly encapsulated and allow the pr ogram to  execute an d print the squ are of th e   
number? 
 
 
A. private int num;public int getNum()  {return num;}public  void setNum(int  num) {this.num 
= num;} 
B. public int num;protected public int getNum() {return num;}protected public void 
setNum(int num) {this.num = num;} 
C. private int num;public int getNum() {return num;}private void setNum(int num) 
{this.num 
= num;} 
D. protected int num;public int getNum() {return num;}public void setNum(int num) 
{this.num = num;} 
E. protected int num;private int getNum() {return num;}public void setNum(intnum) 
{this.num = num;} 
 
 
Answer: A, D  
 
Explanation:  
Incorrect: 
Not B: illegal  combination of  modifiers: protected and public not C: setNum m ethod cannot  
be private.not E: getNum method cannot be private. 
 
 
QUESTION: 6  
Given: 
 
 
What is true about the class Wow? 
 
 
A. It compiles without error. 
B. It does not compile because an abstract class cannot have private methods.  
C. It does not compile because an abstract class cannot have instance variables.  
D. It does not compile because an abstract class must have at least one abstract method.  
E. It does not compile because an abstract class must have a constructor with no arguments.  
 
 
Answer: A 
 
 
QUESTION: 7  
Given: 
public class DoBreak1 { 
public static void main(String[]  args) { String[] t able = {"aa", "bb", "c c", "dd"}; fo r (String  
ss: table) { 
if ( "bb".equals(ss)){ continue;} 
System.out.println(ss); if ( "cc".equals(ss)) { break;} 
} 
} 
} 
What is the result? 
 
 
A. aa cc 
B. aa bb cc 
C. cc dd  
D. cc 
E. Compilation fails. 
 
 
Answer: A 
 
 
QUESTION: 8  
Given: 
Given: 
public class SuperTest { 
public static void main(String[] args) { statement1 
statement2 statement3 
} 
} 
class Shape { public Shape() { 
System.out.println("Shape: constructor"); 
} 
public void foo() { System.out.println("Shape: foo"); 
} 
} 
class Square extends Shape { public Square() { 
super(); 
} 
public Square(String label) { System.out.println("Square: constructor");  
} 
public void foo() { super.foo(); 
} 
public void foo(String label) { System.out.println("Square: foo");  
} 
} 
} 
} 
Whatshould statement1, statement2, and statement3, be respectively, in order to produce the  
result? Shape: constructor Square: foo Shape: foo 
 
 
A. Square square = new Square ("bar"); square.foo ("bar");  square.foo();  
B. Square square = new Square ("bar"); square.foo ("bar");  square.foo ("bar");  
C. Square square = new Square (); square.foo (); square.foo(bar);  
D. Square square = new Square (); square.foo (); square.foo("bar");  
E. Square square = new Square (); square.foo (); square.foo ();  
F. Square square = newSquare(); square.foo("bar");  square.foo();  
 
 
Answer: F 
 
 
QUESTION: 9  
Given: 
public class Marklist { int num; 
public static void graceMarks(Marklist obj4) { obj4.num += 10; 
} 
public static void main(String[] a rgs){ MarkList obj1 = ne w MarkList(); MarkList obj2 =  
obj1; 
MarkList obj1 = null; obj2.num = 60; graceMarks(obj2); 
} 
} 
How many objects are created in the memory runtime? 
 
 
A. 1 
B. 2 
C. 3 
D. 4 
 
 
Answer: B 
 
Explanation:  
obj1 and obj3. 
when you do e2 = e1you're co pying object ref erences -you'r e not m aking a copy of the   
object -a nd so the variables e1 and e2 will both point to the same object.  
 
 
QUESTION: 10  
Given the class definitions: 
 
 
And the code fragment of the main() method, 
 
 
 
What is the result? 
 
 
A. Java Java Java 
B. Java Jeve va 
C. Java Jeve ve 
D. Compilation fails 
 
 
Answer: D 
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