Assignment 7 # 10

PennyJar.getAllPennies() is needed in PennyJarDriver.java
PennyJar may be omitted in the PennyJar Class

Assignment 7 # 6

public class Test
{

private int x;
private static int y;
public void doIt()
{
x = 1;
y = 2;
}


public void tryIt() //cannot be static
{
x = 3; //x is in a static method - cannot be referenced
y = 4;
}
public static void main(String[] args)
{
doIt(); //object instance must be created
tryIt() //object instance must be created

Test t = new Test();
t.doIt();

Test.tryIt(); //must use t.tryIt();

}
}

Assignment 6

Ch7, #4:
public void swapHardDrive (Computer otherComputer)
{
String temp;
temp = otherComputer.hardDrive;
otherComputer.hardDrive = this.hardDrive;
this.hardDrive = temp;
}



Ch7, #12
10
20
30
60
50



Ch8, #5:
public boolean copyTo(Car5 newCar)
{
if(this.make.isEmpty()||this.year.isEmpty()||this.color.isEmpty())
{
return false;
}
else
{
newCar.make = this.make;
newCar.year = this.year;
newCar.color = this.color;
return true;
}
}

Assignment 4 - #7

songIndex = songs.indexOf(songNum);
eolIndex = songs.indexOf('\n', songIndex);
song = songs.substring(songIndex, eolIndex);

Assignment 4 - #6

for( int i=0; i < songs.length(); i++){
foundIndex = songs.indexOf(searchText, i);

if(foundIndex > 0)
  {
   count = count + 1;
   i = foundIndex + 1;
   foundIndex = 0;
  }
}

Answer to #3

if (count == 5){
System.out.println("Sum = " + sum);
System.out.println("Product = " + product);}
} while (count < 5);

Answer to #5

product = 1;
For (i = 2; i <=num; i+=2;){
product = product * i;}
System.out.println ("Product is " + product);