If-Else Statements and DeMorgan's Law

Below is the test run if all the conditions are true

Scanner input = new Scanner(System.in);  // Create a Scanner object
System.out.println("Enter something");
String something = input.nextLine();  // Read user input
System.out.println(something);

boolean period = false;
if (something.contains(".")){
  period = true;
}

boolean a = false;
if (something.contains("a")){
  a = true;
}

boolean b = false;
if (something.contains("b")){
  b = true;
}

boolean five_plus = false;

if(something.length() >= 5){
  five_plus = true;
  //something has 5 or more letters
  // checking an inequality 
  System.out.println("something has 5 or more letters");
}

else{
  //something does not contain more than 5 letters. 
  System.out.print("something does not contain more than 5 letters. ");
}


if(five_plus && !period ){
  //something has more than 5 letters AND doesn't contain a period
  //and operator and de morgan's law
  System.out.println("something has more than 5 letters AND doesn't contain a period");

}
else{
  //something has less than 5 letters. cannot say for sure if it has a period
  System.out.println("something has less than 5 letters. cannot say for sure if it has a period");

}




if(a || b ){
  // something contains the letter a OR contains the letter b
  // or operator
  System.out.println("something contains the letter a OR contains the letter b");
}
else{
  System.out.println("something doesn't contain the letter a OR contain the letter b");

}



if ((five_plus && !period) && (a || b)) {
  //something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b
  // combination of and and or operators
  System.out.println("something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b");
}
else{
  //something has less that 5 letters. cannot say for sure if something contains a or b or a period
  System.out.println("something has less that 5 letters. cannot say for sure if something contains a or b or a period");
}


if (! ((!five_plus || b) || (a && period) )) { //DeMorgan's law with and and or operators
//De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.
  System.out.println("De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.");
}
else{
  //De Morgan's law with code, if it doesn't work
  System.out.println("De Morgan's law with code, if it doesn't work");
}

Enter something
aadya
something has 5 or more letters
something has more than 5 letters AND doesn't contain a period
something contains the letter a OR contains the letter b
something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b
De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.

Below is the test run if all the conditions are false

Scanner input = new Scanner(System.in);  // Create a Scanner object
System.out.println("Enter something");
String something = input.nextLine();  // Read user input
System.out.println(something);

boolean period = false;
if (something.contains(".")){
  period = true;
}

boolean a = false;
if (something.contains("a")){
  a = true;
}

boolean b = false;
if (something.contains("b")){
  b = true;
}

boolean five_plus = false;

if(something.length() >= 5){
  five_plus = true;
  //something has 5 or more letters
  // checking an inequality 
  System.out.println("something has 5 or more letters");
}

else{
  //something does not contain more than 5 letters. 
  System.out.print("something does not contain more than 5 letters. ");
}


if(five_plus && !period ){
  //something has more than 5 letters AND doesn't contain a period
  //and operator and de morgan's law
  System.out.println("something has more than 5 letters AND doesn't contain a period");

}
else{
  //something has less than 5 letters. cannot say for sure if it has a period
  System.out.println("something has less than 5 letters. cannot say for sure if it has a period");

}




if(a || b ){
  // something contains the letter a OR contains the letter b
  // or operator
  System.out.println("something contains the letter a OR contains the letter b");
}
else{
  System.out.println("something doesn't contain the letter a OR contain the letter b");

}



if ((five_plus && !period) && (a || b)) {
  //something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b
  // combination of and and or operators
  System.out.println("something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b");
}
else{
  //something has less that 5 letters. cannot say for sure if something contains a or b or a period
  System.out.println("something has less that 5 letters. cannot say for sure if something contains a or b or a period");
}


if (! ((!five_plus || b) || (a && period) )) { //DeMorgan's law with and and or operators
//De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.
  System.out.println("De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.");
}
else{
  //De Morgan's law with code, if it doesn't work
  System.out.println("De Morgan's law with code, if it doesn't work");
}

Enter something
mort
something does not contain more than 5 letters. something has less than 5 letters. cannot say for sure if it has a period
something doesn't contain the letter a OR contain the letter b
something has less that 5 letters. cannot say for sure if something contains a or b or a period
De Morgan's law with code, if it doesn't work

Case by Case Basis

Below is the test run if all the odd numbered cases are true

Scanner input = new Scanner(System.in);  // Create a Scanner object
System.out.println("Enter something");
String something = input.nextLine();  // Read user input
System.out.println(something);

boolean period = false;
if (something.contains(".")){
  period = true;
}

boolean a = false;
if (something.contains("a")){
  a = true;
}

boolean b = false;
if (something.contains("b")){
  b = true;
}

boolean five_plus = false;
Integer cases = 0;

if(something.length() >= 5){
  five_plus = true;
  cases = 1;
}

else{
  cases =2;
}



switch (cases) {
  case 1:
    System.out.println("something has 5 or more letters");
    break;
  case 2:
    System.out.print("something does not contain more than 5 letters. ");
    break;

}


if(five_plus && !period ){
  cases = 3;
}
else{
  cases = 4;

}


switch (cases){
case 3:
  System.out.println("something has more than 5 letters AND doesn't contain a period");
  break;
case 4:
  System.out.println("something has less than 5 letters. cannot say for sure if it has a period");
  break;

}


if(a || b ){
  cases = 5;
}
else{
  cases = 6;

}



switch (cases){

  case 5:
    System.out.println("something contains the letter a OR contains the letter b");
    break;
  case 6:
    System.out.println("something doesn't contain the letter a OR contain the letter b");
    break;

}


if ((five_plus && !period) && (a || b)) {
  cases = 7;
}
else{
  cases = 8;
}


switch (cases){
  case 7:
    System.out.println("something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b");
    break;
  case 8:
    System.out.println("something has less that 5 letters. cannot say for sure if something contains a or b or a period");
    break;

}


if (! ((!five_plus || b) || (a && period) )) { //DeMorgan's law
  cases = 9;
}
else{
  cases = 10;
}


switch (cases) {
  case 9:
    System.out.println("De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.");
    break;
  case 10:
    System.out.println("De Morgan's law with code, if it doesn't work");
    break;
  }

Enter something
aadya
something has 5 or more letters
something has more than 5 letters AND doesn't contain a period
something contains the letter a OR contains the letter b
something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b
De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.

Below is the test run if all the even numbered cases are true

Scanner input = new Scanner(System.in);  // Create a Scanner object
System.out.println("Enter something");
String something = input.nextLine();  // Read user input
System.out.println(something);

boolean period = false;
if (something.contains(".")){
  period = true;
}

boolean a = false;
if (something.contains("a")){
  a = true;
}

boolean b = false;
if (something.contains("b")){
  b = true;
}

boolean five_plus = false;
Integer cases = 0;

if(something.length() >= 5){
  five_plus = true;
  cases = 1;
}

else{
  cases =2;
}



switch (cases) {
  case 1:
    System.out.println("something has 5 or more letters");
    break;
  case 2:
    System.out.print("something does not contain more than 5 letters. ");
    break;

}


if(five_plus && !period ){
  cases = 3;
}
else{
  cases = 4;

}


switch (cases){
case 3:
  System.out.println("something has more than 5 letters AND doesn't contain a period");
  break;
case 4:
  System.out.println("something has less than 5 letters. cannot say for sure if it has a period");
  break;

}


if(a || b ){
  cases = 5;
}
else{
  cases = 6;

}



switch (cases){

  case 5:
    System.out.println("something contains the letter a OR contains the letter b");
    break;
  case 6:
    System.out.println("something doesn't contain the letter a OR contain the letter b");
    break;

}


if ((five_plus && !period) && (a || b)) {
  cases = 7;
}
else{
  cases = 8;
}


switch (cases){
  case 7:
    System.out.println("something has more that 5 letters and doesn't contain a period AND something has either the letter a or the letter b");
    break;
  case 8:
    System.out.println("something has less that 5 letters. cannot say for sure if something contains a or b or a period");
    break;

}


if (! ((!five_plus || b) || (a && period) )) { //DeMorgan's law
  cases = 9;
}
else{
  cases = 10;
}


switch (cases) {
  case 9:
    System.out.println("De Morgan's law with complex expressions: if something has 5+ letters, and/or doesn't have a 'b' and/or doesn't have an 'a' AND has a period.");
    break;
  case 10:
    System.out.println("De Morgan's law with code, if it doesn't work");
    break;
  }

Enter something
mort
something does not contain more than 5 letters. something has less than 5 letters. cannot say for sure if it has a period
something doesn't contain the letter a OR contain the letter b
something has less that 5 letters. cannot say for sure if something contains a or b or a period
De Morgan's law with code, if it doesn't work