Solved

Posted on 2009-02-23
Medium Priority
204 Views

TIA,
V.
``````import java.io.*;
import java.util.Scanner;
import java.util.Random;

public class Class4( int[]  pack1 ) {
this.pack1 = pack1 ;
}
protected int[]  pack1 ;

int    i;
int[]  pack1      = new int[20]; //pack1[0],  ..... pack1[19]
Random randomizer = new Random();

public Class4() {

}
public static Class4 getInstance(){
return new Class4();
}

public static void main( String[] args ) {
Class4 instance1 = Class4.getInstance();
instance1.makeArray();
instance1.dummy();

Class4 instance2 = Class4.getInstance();
instance2.makeArray();
instance2.dummy();
// 2) Print them out
for ( int i = 0; i < 20; i++ ) {
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}

// 3) Print them out in reverse order
System.out.println( "In reverse order that is:" );
for ( int i = 19; i >= 0; i-- ) {
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}

// 4) Print out the even numbers only
for ( int i = 0; i < 20; i++ ) {
if ( instance1.pack1[i] % 2 == 0 )
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}
} //main

private void dummy() {
System.out.println("I a dummy method");
}
public void makeArray() { // new function
// 1) Fill in with random numbers
for ( int i = 0; i < 20; i++ ) {
pack1[i] = randomizer.nextInt( 1000 );
}
}

public void print() {
for ( int i = 0; i < 20; i++ ) {
System.out.println(pack1[i]);
}

}
} //Class4
``````
0
Question by:Nakuru1234
• 4
• 4
• 2

LVL 86

Expert Comment

ID: 23711061
Constructors are not actually overloaded in Java - they're just separate ctors. That aside, how/why would you want to 'overload' it?
0

Author Comment

ID: 23711122
I'd like to see how Java performs when you overload using super().

TIA,
V.
0

LVL 86

Expert Comment

ID: 23711644
In this case, the only use of super would be:
``````public class Class4( int[]  pack1 ) {
super(); //Call the superclass (Object) empty ctor
this.pack1 = pack1 ;
}
``````
0

Author Comment

ID: 23711818
Great! Thank you.
0

LVL 86

Expert Comment

ID: 23712191
Any other questions on that?
0

LVL 86

Expert Comment

ID: 23712194
Anythng else on that?
0

Author Comment

ID: 23712242
No...thanks! Will close it up...thank you so much! This is how I assume you meant...right?

import java.io.*;
import java.util.Scanner;
import java.util.Random;

public class Class4( int[]  pack1 ) {
super(); //Call the superclass (Object) empty ctor
this.pack1 = pack1 ;
}
protected int[]  pack1 ;

int    i;
int[]  pack1      = new int[20]; //pack1[0],  ..... pack1[19]
Random randomizer = new Random();

public Class4() {

}
public static Class4 getInstance(){
return new Class4();
}

public static void main( String[] args ) {
Class4 instance1 = Class4.getInstance();
instance1.makeArray();
instance1.dummy();

Class4 instance2 = Class4.getInstance();
instance2.makeArray();
instance2.dummy();
// 2) Print them out
for ( int i = 0; i < 20; i++ ) {
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}

// 3) Print them out in reverse order
System.out.println( "In reverse order that is:" );
for ( int i = 19; i >= 0; i-- ) {
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}

// 4) Print out the even numbers only
for ( int i = 0; i < 20; i++ ) {
if ( instance1.pack1[i] % 2 == 0 )
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}
} //main

private void dummy() {
System.out.println("I a dummy method");
}
public void makeArray() { // new function
// 1) Fill in with random numbers
for ( int i = 0; i < 20; i++ ) {
pack1[i] = randomizer.nextInt( 1000 );
}
}

public void print() {
for ( int i = 0; i < 20; i++ ) {
System.out.println(pack1[i]);
}

}
} //Class4
0

LVL 92

Expert Comment

ID: 23716493
you wouldn't do it like that :)  You ctor and member vars ned to be included in the class. Plus calling super() is actually impleied so it is not necessary to make that call explicitly.

import java.io.*;
import java.util.Scanner;
import java.util.Random;

public class Class4 {

public class Class4( int[]  pack1 ) {
super(); //Call the superclass (Object) empty ctor *** this line is implied and can re removed
this.pack1 = pack1 ;
}
protected int[]  pack1 ;

int    i;
int[]  pack1      = new int[20]; //pack1[0],  ..... pack1[19]
Random randomizer = new Random();

public static Class4 getInstance(){
return new Class4();
}

public static void main( String[] args ) {
Class4 instance1 = Class4.getInstance();
instance1.makeArray();
instance1.dummy();

Class4 instance2 = Class4.getInstance();
instance2.makeArray();
instance2.dummy();
// 2) Print them out
for ( int i = 0; i < 20; i++ ) {
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}

// 3) Print them out in reverse order
System.out.println( "In reverse order that is:" );
for ( int i = 19; i >= 0; i-- ) {
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}

// 4) Print out the even numbers only
for ( int i = 0; i < 20; i++ ) {
if ( instance1.pack1[i] % 2 == 0 )
System.out.println(instance1.pack1[i]==instance2.pack1[i]);
}
} //main

private void dummy() {
System.out.println("I a dummy method");
}
public void makeArray() { // new function
// 1) Fill in with random numbers
for ( int i = 0; i < 20; i++ ) {
pack1[i] = randomizer.nextInt( 1000 );
}
}

public void print() {
for ( int i = 0; i < 20; i++ ) {
System.out.println(pack1[i]);
}

}
} //Class4

0

LVL 92

Accepted Solution

objects earned 2000 total points
ID: 23716516
you have a few other problems, including a missing constructor.
Not sure exactly what you need but the following should at least compile
Let me know if you have any questions

import java.util.Random;

public class Class4 {

public Class4() {
super();
makeArray();
}

public Class4(int[] pack1) {
super(); // Call the superclass (Object) empty ctor *** this line is
// implied and can re removed
this.pack1 = pack1;
}

int i;
int[] pack1 = new int[20]; // pack1[0], ..... pack1[19]
Random randomizer = new Random();

public static Class4 getInstance() {
return new Class4();
}

public static void main(String[] args) {
Class4 instance1 = Class4.getInstance();
instance1.makeArray();
instance1.dummy();

Class4 instance2 = Class4.getInstance();
instance2.makeArray();
instance2.dummy();
// 2) Print them out
for (int i = 0; i < 20; i++) {
System.out.println(instance1.pack1[i] == instance2.pack1[i]);
}

// 3) Print them out in reverse order
System.out.println("In reverse order that is:");
for (int i = 19; i >= 0; i--) {
System.out.println(instance1.pack1[i] == instance2.pack1[i]);
}

// 4) Print out the even numbers only
for (int i = 0; i < 20; i++) {
if (instance1.pack1[i] % 2 == 0)
System.out.println(instance1.pack1[i] == instance2.pack1[i]);
}
} // main

private void dummy() {
System.out.println("I a dummy method");
}

public void makeArray() { // new function
// 1) Fill in with random numbers
for (int i = 0; i < 20; i++) {
pack1[i] = randomizer.nextInt(1000);
}
}

public void print() {
for (int i = 0; i < 20; i++) {
System.out.println(pack1[i]);
}

}
} // Class4

0

Author Closing Comment

ID: 31550072
Perfect!
0

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