Q1. amount the same, y, n, why? public class CheckingAct { private String actNum; private String nameOnAct; private int balance; . . . . public void processDeposit( int amount ) { balance = balance + amount ; } // modified toString() method public String toString() { return "Account: " + actNum + "\tName: " + nameOnAct + "\tBalance: " + amount ; } } Q2. amount the same, y, n, why? public class CheckingAct { private String actNum; private String nameOnAct; private int balance; . . . . public void processDeposit( int amount ) { // scope of amount starts here balance = balance + amount ; // scope of amount ends here } public void processCheck( int amount ) { // scope of amount starts here int charge; incrementUse(); if ( balance < 100000 ) charge = 15; else charge = 0; balance = balance - amount - charge ; // scope of amount ends here } } Q3. balance the same, y, n, why? class CheckingAct { . . . . private int balance; public void processCheck( int amount ) { int charge; if ( balance < 100000 ) charge = 15; else charge = 0; balance = balance - amount - charge ; // change the local copy of the value in "amount" amount = 0 ; } } public class CheckingTester { public static void main ( String[] args ) { CheckingAct act; int check = 5000; act = new CheckingAct( "123-345-99", "Your Name", 100000 ); System.out.println( "check:" + check ); // prints "5000" // call processCheck with a copy of the value 5000 act.processCheck( check ); System.out.println( "check:" + check ); // prints "5000" --- "check" was not changed } } Q4 amount the same, y, n, why? balance the same, y, n, why? class CheckingAct { . . . . private int balance; public void processCheck( int amount ) { int amount; incrementUse(); if ( balance < 100000 ) amount = 15; // which amount ??? else amount = 0; // which amount ??? balance = balance - amount ; // which amount ??? } } Q5. balance the same, y, n, why? class CheckingAct { . . . . private int balance; . . . . public void processDeposit( int amount ) { int balance = 0; // New declaration of balance. balance = balance + amount ; // This uses the local variable, balance. } } Q6a Count and sum the same, y, n, why? { int sum = 0; for ( int count = 0; count < 10; count++ ) { System.out.print( count + " " ); sum = sum+count; } } Q6b { int sum = 0; for ( int count = 0; count < 10; count++ ) { System.out.print( count + " " ); sum = sum+count; } System.out.println("\nAfter the loop count is: " + count ); } Q7 What is printed, why? class FindIt { private int sum; public FindIt( int sum ) { this.sum = sum; } public void increment( int inc ) { sum = sum + inc; System.out.println("FindIt sum: " + sum ); } } public class MainClass { public static void main ( String[] args) { int sum = 99; FindIt findObj = new FindIt( 34 ); findObj.increment( 6 ); System.out.println("sum: " + sum ); } }

Q1. amount the same, y, n, why?

public class CheckingAct

{

private String actNum;

private String nameOnAct;

private int balance;

. . . .

public void processDeposit( int amount )

{

balance = balance + amount ;

}

// modified toString() method

public String toString()

{

return "Account: " + actNum + "\tName: " + nameOnAct +

"\tBalance: " + amount ;

}

}

Q2. amount the same, y, n, why?

public class CheckingAct

{

private String actNum;

private String nameOnAct;

private int balance;

. . . .

public void processDeposit( int amount )

{ // scope of amount starts here

balance = balance + amount ;

// scope of amount ends here

}

public void processCheck( int amount )

{ // scope of amount starts here

int charge;

incrementUse();

if ( balance < 100000 )

charge = 15;

else

charge = 0;

balance = balance - amount - charge ;

// scope of amount ends here

}

}

Q3. balance the same, y, n, why?

class CheckingAct

{

. . . .

private int balance;

public void processCheck( int amount )

{

int charge;

if ( balance < 100000 )

charge = 15;

else

charge = 0;

balance = balance - amount - charge ;

// change the local copy of the value in "amount"

amount = 0 ;

}

}

public class CheckingTester

{

public static void main ( String[] args )

{

CheckingAct act;

int check = 5000;

act = new CheckingAct( "123-345-99", "Your Name", 100000 );

System.out.println( "check:" + check ); // prints "5000"

// call processCheck with a copy of the value 5000

act.processCheck( check );

System.out.println( "check:" + check ); // prints "5000" --- "check" was not changed

}

}

Q4

amount the same, y, n, why?

balance the same, y, n, why?

class CheckingAct

{

. . . .

private int balance;

public void processCheck( int amount )

{

int amount;

incrementUse();

if ( balance < 100000 )

amount = 15; // which amount ???

else

amount = 0; // which amount ???

balance = balance - amount ; // which amount ???

}

}

Q5. balance the same, y, n, why?

class CheckingAct

{

. . . .

private int balance;

. . . .

public void processDeposit( int amount )

{

int balance = 0; // New declaration of balance.

balance = balance + amount ; // This uses the local variable, balance.

}

}

Q6a

Count and sum the same, y, n, why?

{

int sum = 0;

for ( int count = 0; count < 10; count++ )

{

System.out.print( count + " " );

sum = sum+count;

}

}

Q6b

{

int sum = 0;

for ( int count = 0; count < 10; count++ )

{

System.out.print( count + " " );

sum = sum+count;

}

System.out.println("\nAfter the loop count is: " + count );

}

Q7

What is printed, why?

class FindIt

{

private int sum;

public FindIt( int sum )

{

this.sum = sum;

}

public void increment( int inc )

{

sum = sum + inc;

System.out.println("FindIt sum: " + sum );

}

}

public class MainClass

{

public static void main ( String[] args)

{

int sum = 99;

FindIt findObj = new FindIt( 34 );

findObj.increment( 6 );

System.out.println("sum: " + sum );

}

}