public String toString(){
  return (super.toString() + "PrivateKeyUsage: [\n" + ((notBefore == null) ? "" : "From: " + notBefore.toString() + ", ")+ ((notAfter == null) ? "" : "To: " + notAfter.toString())+ "]\n");
}

public String toString ( ) { return ( super . toString ( ) + "PrivateKeyUsage: [\n" + ( ( notBefore == null ) ? "" : "From: " + notBefore . toString ( ) + ", " ) + ( ( notAfter == null ) ? "" : "To: " + notAfter . toString ( ) ) + "]\n" ) ; }
return the printable string .
