Object objToString = "test"; String str1 = objToString.toString(); String str2 = String.valueOf(objToString); String str3 = (String) objToString; System.out.println("str1 = " + str1); System.out.println("str2 = " + str2); System.out.println("str3 = " + str3); Object nullObjToString = null; //String str4 = nullObjToString.toString(); //System.out.println("str4 = " + str4); String str5 = String.va..