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John Peter
Pune, Maharashtra, India
How to handle large string append in java with example
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Hints 
Either use StringBuffer or StringWriter for appending large strings in Java.

Wrong
String numberList = "";

for (int i=1;i<=100000;i++){
     //Append multitime to the same string variable each time allocates new memory to take time.
     numberList += i + "\n";
}
StringWriterExample
import java.io.StringWriter;

public class StringWriterExample {
    public static void main(String args[]) throws Exception {
        StringWriter numberList = new StringWriter();

        for (int i=1;i<=100000;i++){
            numberList.write(i + "\n");
        }
        
        System.out.println(numberList);
    }
}
Output 
1
2
3
4
-
-
-
99999
100000
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