Hi check this code.It is not going in if condition

[Neha Kathuriaa]

Hi
Please check this iit is not going in if condition.

 
package collection.practice;
 
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;
 
public class Account {
 
/**
 * 
 * <li><B>Method Description - .</B>
 * 
 * <li><B>Precondition - </B>
 * 
 * <li><B>Post Condition - </B>
 * 
 * <li><B>Invariant - </B>
 * 
 * @param args
 */
 
public static void main(String[] args) {
 
Account account = new Account();
Scanner scan = new Scanner(System.in);
 
System.out.println("Enter the account id ");
String accId = scan.next();
 
System.out.println("Enter the transaction type ");
String txType = scan.next();
if (txType.equals("deposit")) {
System.out.println("Enter the amount to be deposited");
String amount = scan.next();
Float amt = Float.parseFloat(amount);
account.deposit(amt);
 
} else {
System.out.println("Enter the amount to be withdrawn");
String amount = scan.next();
Float amt = Float.parseFloat(amount);
account.withdrawl(amt);
}
 
}
 
private Float withdrawl(Float amt) {
// TODO Auto-generated method stub
 
return amt;
}
 
private Float deposit(Float amt) {
System.out.println("Entered the deposit method");
File file = new File(
"C:\\eclipseworkspaces\\Collection\\src\\META-INF\\persistence.xml");
FileReader reader;
try {
reader = new FileReader(file);
BufferedReader buf = new BufferedReader(reader);
HashMap map = new HashMap();
 
String s;
 
while ((s = buf.readLine()) != null) {
System.out.println("Entered the while loop");
System.out.println("+message" + s.toString());
String[] key = s.split("=");
 
System.out.println("key[0]" + key[0]);
String t  = new String("accId");
String amount1 = new String("amount");
if (key[0]==t) {
System.out.println("Entered if");
String accIdKeyword = key[0];
String acci = key[1];
int accNo = Integer.parseInt(acci);
map.put(accIdKeyword, accNo);
System.out.println("Exit if");
 
} else if (key[0]==amount1) {
System.out.println("entered else");
String amountKeyword = key[0];
String accntBalnc = key[1];
float accountBalance = Float.parseFloat(accntBalnc);
accountBalance = accountBalance + amt;
map.put(amountKeyword, accountBalance);
System.out.println("exit else");
 
}
}
Set<Map.Entry> set = map.entrySet();
for (Map.Entry me : set) {
System.out.println("getting set");
System.out.println("me.getkey - " + me.getKey());
System.out.println("me.getValue()" + me.getValue());
}
 
reader.close();
 
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
 
return amt;
}
 
}

[Chandra Bhatt]

At what point?

[Meet Gaurav]

The code you have posted is working fine.. Check the input, Its case Sensitive..

[Chandra Bhatt]

 
.....
String[] key = s.split("=");
 
System.out.println("key[0]" + key[0]);
String t  = new String("accId");
String amount1 = new String("amount");
if (key[0]==t) {

.....
.....
 
   

You are comparing the String reference (using ==) not the content equality
using (equals(Object).

[Neha Kathuriaa]

hi
I am reading from a file .whose contents are

accId = 123
amount = 2300.012

Problem is it is reteiving the data from the file .But when it enters the while loop .It does nt compares the string in the if condition .I have tried using compareTo() and equals() also.But it is not comparing the string s.Also after reading 2 lines the reader goes to the third line and brings a blank space . which it should not show.

[Chandra Bhatt]

Did you use?

if (key[0].trim().equals(t)) {
}

if you don't want use equals() do String t ="accId"; rather than
String t = new String("accId");

[Neha Kathuriaa]

thanks
Actually I did not trim the data coming from the file .It had space in it.