if (customTipAnswer.toLowerCase() == "yes") {

} else (customTipAnswer.toLowerCase() == "no") {

package com.bciancio;
import java.util.*;

public class TipCalculation {

public static void main(String[] args) {
// Creates an instance of the Tip class
Tip tipTestA; //Creates controller / reference
Scanner input = new Scanner(System.in); //create a way for user to addInput

try {

System.out.println("Enter the bill amount: ");
double billAmountInput = input.nextDouble();

System.out.println("Would you like to add a custom tip? Type either 'yes' or 'no'");
String customTipAnswer = input.next();

if (customTipAnswer == "yes") {

System.out.println("Enter the optional custom tip: ");
int customTipAmountInput = input.nextInt();

tipTestA = new Tip(billAmountInput,customTipAmountInput);

System.out.println(tipTestA); //Println tipTestA, the Objects.toString is override in the Tip class

} else if (customTipAnswer == "no"){

tipTestA = new Tip(billAmountInput); // Calls constructor

System.out.println(tipTestA); //Println tipTestA, the Objects.toString is override in the Tip class
}

} catch (Exception e) {
System.out.println("Please enter valid criteria!");
}
}
}

} else (customTipAnswer.toLowerCase() == "no") {

} else if (customTipAnswer == "no"){

if (variable.equalsIgnoreCase("no"))

if ("no".equalsIgnoreCase(variable))

package com.bciancio;
import java.util.*;

public class TipCalculation {

public static void main(String[] args) {
// Creates an instance of the Tip class
Tip tipTestA; //Creates controller / reference
Scanner input = new Scanner(System.in); //create a way for user to addInput
boolean notValidated = true;

try {
System.out.println("Enter the bill amount: ");
double billAmountInput = input.nextDouble();

while (notValidated) {
System.out.println("Would you like to add a custom tip? Type either 'yes' or 'no'");
String customTipAnswer = input.next();

if ((customTipAnswer.equalsIgnoreCase("yes"))) {

System.out.println("Enter your custom tip: ");
int customTipAmountInput = input.nextInt();

tipTestA = new Tip(billAmountInput, customTipAmountInput);

System.out.println(tipTestA); //Println tipTestA, the Objects.toString is override in the Tip class
notValidated = false;

} else if ("no".equalsIgnoreCase(customTipAnswer)) {

tipTestA = new Tip(billAmountInput); // Calls constructor
System.out.println(tipTestA); //Println tipTestA, the Objects.toString is override in the Tip class
notValidated = false;
} else {
System.out.println("Please enter yes or no!");
}
}

} catch (Exception e) {
System.out.println("Please enter valid criteria!" + e);
}
}
}

mTenPercentTipAmount.setText(String.valueOf(df.format(tipTestA.getTenPercentTipAmount())));

<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/btn_calculate"
android:id="@+id/btn_calculate"
android:layout_gravity="center_horizontal"
android:onClick="tipCalculations"/>

package bciancio.com.mytipcalcapp;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.text.NumberFormat;

/**
* The type Main activity.
*/
public class MainActivity extends ActionBarActivity {

//Creates a myDebug Tag constant for easy LogCat referencing
private static final String TAG = "myDebug";


//Member userInput variable declarations
EditText mBillAmount;
EditText mCustomTipPercent;

//Member variable declarations of the PercentTipAmount
TextView mTenPercentTipAmount;
TextView mFifteenPercentTipAmount;
TextView mEighteenPercentTipAmount;
TextView mCustomPercentTipAmount;

//Member variable declarations of the totalWithTipAdded
TextView mTotalWithTenTipAdded;
TextView mTotalWithFifteenTipAdded;
TextView mTotalWithEighteenTipAdded;
TextView mTotalWithCustomTipAdded;

//Declaring member variable for the calculate button
Button mCalculate;

//Referencing the NumberFormat class
NumberFormat df;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//Add resource links for widgets in the xml layout
//Wiring up widgets
//Wire userInput widgets
mBillAmount = (EditText) findViewById(R.id.userInput_billAmount);
mCustomTipPercent = (EditText) findViewById(R.id.userInput_customTip);
mCalculate = (Button) findViewById(R.id.btn_calculate);

//Wiring of the tipAmount variables
mTenPercentTipAmount = (TextView) findViewById(R.id.tenPercentTipAmount);
mFifteenPercentTipAmount = (TextView) findViewById(R.id.fifteenPercentTipAmount);
mEighteenPercentTipAmount =(TextView) findViewById(R.id.eighteenPercentTipAmount);
mCustomPercentTipAmount = (TextView) findViewById(R.id.customPercentTipAmount);

//Wiring of the totalAmount variables
mTotalWithTenTipAdded = (TextView) findViewById(R.id.totalWithTenTipAdded);
mTotalWithFifteenTipAdded = (TextView) findViewById(R.id.totalWithFifteenTipAdded);
mTotalWithEighteenTipAdded = (TextView) findViewById(R.id.totalWithEighteenTipAdded);
mTotalWithCustomTipAdded = (TextView) findViewById(R.id.totalWithCustomTipAdded);

df = NumberFormat.getCurrencyInstance();
}

/**
* Tip calculations.
*
* @param view the view
*/
public void tipCalculations(View view){

tipCalc tipTestA = null;
Log.println(Log.DEBUG,TAG,"Calculate button has been clicked!");

if(mBillAmount.getText().toString().length() == 0) { //validates if user entered billAmount
//if not set a toast else run other checks for constructor calling
//The toast method requires to know context,charSequence, and the toast duration
Toast.makeText(getApplicationContext(), "BAD!! Enter at least a bill amount",
Toast.LENGTH_SHORT).show();

Log.println(Log.DEBUG,TAG,"User did not enter a Bill Amount! TOAST EM!!!");

} else {
//Did the user input a customTip?
if(mCustomTipPercent.getText().toString().length() == 0) {

Integer customTipPercent = 0;
Double billAmount = Double.parseDouble(mBillAmount.getText().toString());
tipTestA = new tipCalc(billAmount, customTipPercent);

Log.println(Log.DEBUG,TAG,"Bill Amount was entered, but no Custom Tip. Assign a default custom tip of 0");

} else { //If no customTip than...

Integer customTipPercent = Integer.parseInt(mCustomTipPercent.getText().toString());
Double billAmount = Double.parseDouble(mBillAmount.getText().toString());
tipTestA = new tipCalc(billAmount, customTipPercent);

Log.println(Log.DEBUG,TAG,"Bill Amount & Custom Tip Percent were entered");
}
}
//Did the user enter atleast a billAmount (making tipTestA != null)
if(tipTestA != null){

mTenPercentTipAmount.setText(String.valueOf(df.format(tipTestA.getTenPercentTipAmount())));
mFifteenPercentTipAmount.setText(String.valueOf(df.format(tipTestA.getFifteenPercentTipAmount())));
mEighteenPercentTipAmount.setText(String.valueOf(df.format(tipTestA.getEighteenPercentTipAmount())));
mCustomPercentTipAmount.setText(String.valueOf(df.format(tipTestA.getCustomPercentTipAmount())));

mTotalWithTenTipAdded.setText(String.valueOf(df.format(tipTestA.getTotalWithTenTipAdded())));
mTotalWithFifteenTipAdded.setText(String.valueOf(df.format(tipTestA.getTotalWithFifteenTipAdded())));
mTotalWithEighteenTipAdded.setText(String.valueOf(df.format(tipTestA.getTotalWithEighteenTipAdded())));
mTotalWithCustomTipAdded.setText(String.valueOf(df.format(tipTestA.getTotalWithCustomTipAdded())));

Log.println(Log.DEBUG,TAG,"Since they entered ATLEAST a bill amount tipTestA != null, time to get the values!!!!");
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}

package bciancio.com.mytipcalcapp;
/**
* Created by student on 2/4/2015.
* @author Brandon Ciancio Lab2_1
*/
public class tipCalc {

//Argument Variables
private double mBillAmount;
private int mCustomTipPercent;

//Private variable declarations of the PercentTipAmount
private double mTenPercentTipAmount;
private double mFifteenPercentTipAmount;
private double mEighteenPercentTipAmount;
private double mCustomPercentTipAmount;

//Private variable declarations of the totalWithTipAdded
private double mTotalWithTenTipAdded;
private double mTotalWithFifteenTipAdded;
private double mTotalWithEighteenTipAdded;
private double mTotalWithCustomTipAdded;

/**
* Instantiates a new Tip calc.
*
* @param mBillAmount the m bill amount
* @param mCustomTipPercent the m custom tip percent
*/
public tipCalc(Double mBillAmount, Integer mCustomTipPercent) {

this.mBillAmount = mBillAmount;
this.mCustomTipPercent = mCustomTipPercent;

mTenPercentTipAmount = (mBillAmount * .1);
mFifteenPercentTipAmount = (mBillAmount * .15);
mEighteenPercentTipAmount = (mBillAmount * .18);
mCustomPercentTipAmount = (mBillAmount * mCustomTipPercent * .01);

mTotalWithTenTipAdded = (mBillAmount + mTenPercentTipAmount);
mTotalWithFifteenTipAdded = (mBillAmount + mFifteenPercentTipAmount);
mTotalWithEighteenTipAdded = (mBillAmount + mEighteenPercentTipAmount);
mTotalWithCustomTipAdded = (mBillAmount + mCustomPercentTipAmount);

}

/**
* Gets ten percent tip amount.
*
* @return the ten percent tip amount
*/
public double getTenPercentTipAmount() {
return mTenPercentTipAmount;
}

/**
* Gets fifteen percent tip amount.
*
* @return the fifteen percent tip amount
*/
public double getFifteenPercentTipAmount() {
return mFifteenPercentTipAmount;
}

/**
* Gets eighteen percent tip amount.
*
* @return the eighteen percent tip amount
*/
public double getEighteenPercentTipAmount() {
return mEighteenPercentTipAmount;
}

/**
* Gets custom percent tip amount.
*
* @return the custom percent tip amount
*/
public double getCustomPercentTipAmount() {
return mCustomPercentTipAmount;
}

/**
* Gets total with ten tip added.
*
* @return the total with ten tip added
*/
public double getTotalWithTenTipAdded() {
return mTotalWithTenTipAdded;
}

/**
* Gets total with fifteen tip added.
*
* @return the total with fifteen tip added
*/
public double getTotalWithFifteenTipAdded() {
return mTotalWithFifteenTipAdded;
}

/**
* Gets total with eighteen tip added.
*
* @return the total with eighteen tip added
*/
public double getTotalWithEighteenTipAdded() {
return mTotalWithEighteenTipAdded;
}

/**
* Gets total with custom tip added.
*
* @return the total with custom tip added
*/
public double getTotalWithCustomTipAdded() {
return mTotalWithCustomTipAdded;
}

}

mCalculate .setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v){
tipCalculations();
}
});

<customer>
<name>lelouch lamperouge</name>
<phone>5555555555</phone>
<email>lelouch.lamperouge@gmail.com</email>
</customer>

private static final String TAG = "myDebug";
public void logCatGen(String debugMessage) {
Log.println(Log.DEBUG,TAG,debugMessage);
}

logCatGen("HelloWorld");