1Z0-803 Free Practice Test

Given:
public class String1 {
public static void main(String[] args) { String s = "123";
if (s.length() >2)

1. A. s.concat("456");for(int x = 0; x <3; x++) s += "x";System.out.println(s);}}What is the result?
2. B. 123
3. C. 123xxx
4. D. 123456
5. E. 123456xxx
6. F. Compilation fails

Correct Answer: B
123xxx
The if clause is not applied. Note: Syntax of if-statement:
if ( Statement ) {
}

Given:

1. A. ns = 50 S = 125ns = 125 S = 125ns = 100 S = 125
2. B. ns = 50 S = 125 ns = 125 S = 125ns = 0 S = 125
3. C. ns = 50 S = 50 ns = 125 S = 125ns = 100 S = 100
4. D. ns = 50 S = 50 ns = 125 S = 125ns = 0 S = 125

Correct Answer: B

Given:
public class ScopeTest { int j, int k;
public static void main(String[] args) { ew ScopeTest().doStuff(); }
void doStuff() { nt x = 5; oStuff2();
System.out.println("x");
}
voiddoStuff2() { nt y = 7;
ystem.out.println("y");
or (int z = 0; z < 5>ystem.out.println("y");
}
Which two items are fields?

1. A. j
2. B. k
3. C. x
4. D. y
5. E. z

Correct Answer: AB

Given the code fragment:
int a = 0; a++;
System.out.printIn(a++); System.out.printIn(a);
What is the result?

1. A. 12
2. B. 01
3. C. 11
4. D. 22

Correct Answer: A
The first println prints variable a with value 1 and then increases the variable to 2.

Given:
public class Main {
public static void main(String[] args) { try {
doSomething();
}
catch (SpecialException e) { System.out.println(e);
}}
static void doSomething() { int [] ages = new int[4]; ages[4] = 17; doSomethingElse();
}
static void doSomethingElse() {
throw new SpecialException("Thrown at end of doSomething() method"); }
}
What is the output?

1. A. SpecialException: Thrown at end of doSomething() method
2. B. Error in thread "main" java.lan
3. C. ArrayIndexOutOfBoundseror
4. D. Exception inthread "main" java.lang.ArrayIndexOutOfBoundsException: 4 at Main.doSomething(Main.java:12)at Main.main(Main.java:4)
5. E. SpecialException: Thrown at end of doSomething() method at Main.doSomethingElse(Main.java:16)at Main.doSomething(Main.java:13) at Main.main(Main.java:4)

Correct Answer: C
The following line causes a runtime exception (as the index is out of bounds): ages[4] = 17;
A runtime exception is thrown as anArrayIndexOutOfBoundsException.
Note: The third kind of exception (compared to checked exceptions and errors) is the runtime exception. These are exceptional conditions that are internal to the application, and
that the application usually cannot anticipate or recover from. These usually indicate programming bugs, such as logic errorsor improper use of an API.
Runtime exceptionsare not subjectto the Catch or Specify Requirement. Runtime exceptions are those indicated byRuntimeExceptionand its subclasses.