Java by API/java.io/StringReader

new StringReader(String s)

 
import java.io.IOException;
import java.io.StringReader;
public class Main {
  public static void main(String[] args) throws IOException {

    StringReader in2 = new StringReader("a bc ddd");
    int c;
    while ((c = in2.read()) != -1)
      System.out.print((char) c);
  }
}//

StringReader: read()

 
import java.io.IOException;
import java.io.StringReader;
public class Main {
  public static void main(String[] args) throws IOException {

    StringReader in2 = new StringReader("a bc ddd");
    int c;
    while ((c = in2.read()) != -1)
      System.out.print((char) c);
  }
}//