Java - How you can fill With with zeros to the left ...

public String fillZero(String field, int size){
String res = field;
while(res.length() < size)
res="0"+res;
return res;
}

Java - How i can ... Iterator List (another example, now with loop "for")

import java.util.List;
import java.util.ArrayList;

public class Teste {

public static void main(String[] args) {

List list=new ArrayList();

list.add("value1");
list.add("value2");
list.add("value3");

for(String iterator : list){
System.out.println("Value: " + iterator);

}
}
}

Java - How i can ... Iterator List

import java.util.Iterator;
import java.util.List;
import java.util.ArrayList;

public class List {

public static void main(String[] args) {

List list = new ArrayList();

list.add("value1");
list.add("value2");
list.add("value3");

Iterator it=list.iterator();

while(it.hasNext())
{
String value=(String)it.next();

System.out.println("Value :"+value);
}
}
}






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Java - How i can parse String to Integer

String valueString = "123";
int valueInt = Integer.parseInt(value);