Question

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How do I compare strings in Java?

I read some records from a csv file and store them into a string type array, then save each field in proper variable after convert them. In a part of code I have to compare a field in array with one of those variables with string type. both these arrays filled from a csv file.

            int count=0;
            String name=resourceArray[i][j+1] ;
            while(machineArray[count][0]==name)
            {

                machineID=Integer.parseInt(machineArray[count][1]);
                machinePe=Integer.parseInt(machineArray[count][2]);
                count++;
             }

the problem is ‘while’ condition never become true. I debug it and I’m sure machineArray[0][0] and ‘name’ have same value.

Answer 1

Strings do not always have the same identity (although it is common). Try:

machineArray[count][0].equals(name)