Cannot click two digit number while Automating Google Calculator using Selenium - selenium

Question

I need to write a code where
a) Go to www.google.com and search for 'calculator'. In the results you will see a calculator coming in the browser itself.
b) Read the Num1 from xls using java code
c) Click the Num1 in calculator of google
Excel File is simple and looks like this.
Num1
7
95
I hope you people understood.
First row Num1
Second row 2
Third row is 95
Using #Test I have written a code
The problem is, I can click Num1 7 but not 95.
Moreover if my num1 is 2 also, it throws me error. Please help.
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
public class Exercise3 {
String part1 = "//*[#id='cwbt";
String part2 = "']/div/span";
#Test(dataProvider="getData")
public void calculator(String num1, String num2, String operation, String expectedResult){
WebDriver d = new FirefoxDriver();
d.manage().window().maximize();
d.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
d.get("https://www.google.co.in/?gfe_rd=cr&ei=2ArXVu7RGafG8AfjsKPgDQ&gws_rd=ssl#q=calculator");
//calculator box
//*[#id='cwbt13']/div/span
//*[#id='cwbt23']/div/span
//*[#id='cwbt33']/div/span
//*[#id='cwbt43']/div/span
WebElement box = d.findElement(By.xpath("//*[#id='cwmcwd']"));
for(int i=13;i<=46;i++){
String num = d.findElement(By.xpath("//*[#id='cwbt"+i+"']/div/span")).getText();
if(num.equals(num1)){
d.findElement(By.xpath("//*[#id='cwbt"+i+"']/div/span")).click();
break;
}
}
}
#DataProvider
public Object[][] getData(){
Xls_Reader xls = new Xls_Reader("E:\\Pessoal\\QTPSelenium\\Excel\\Calculator.xlsx");
int rows = xls.getRowCount("Addition");
int cols = xls.getColumnCount("Addition");
Object data[][] = new Object[rows-1][cols-2];
for(int rNum=2;rNum<=rows;rNum++){
for(int cNum=0;cNum<cols-2;cNum++){
System.out.println(xls.getCellData("Addition", cNum, rNum));
data[rNum-2][cNum] = xls.getCellData("Addition", cNum, rNum);
}
}
return data;
}
}

Answer 1

try following code/ I have updated according to Java Lang
FirefoxDriver driver;
driver = new FirefoxDriver();
driver.manage().timeouts().implicitlyWait(10,TimeUnit.SECONDS);
driver.get("https://www.google.co.in/?gfe_rd=cr&ei=2ArXVu7RGafG8AfjsKPgDQ&gws_rd=ssl#q=calculator");
String strJavaScript = "document.getElementById('cwos').textContent= " + num1.trim() + " " + operation.trim() + " " + num2.trim() ;
Object obj;
//org.openqa.selenium.JavascriptExecutor.class.
obj = driver.executeScript(strJavaScript, (Object) null);
driver.findElement(By.xpath(".//*[#id='cwbt45']/div/span")).click();
String answer = driver.findElement(By.id("cwos")).getText();
if (expectedAnswer == null ? answer == null : expectedAnswer.equals(answer)) {
System.out.println("Expected answer and given answer are same.");
}
else
System.out.println("Expected answer and given answer are not same.");
System.out.print(answer);
if any issue then let me know.