int和string转换,数组和list转换

int age=12; String ageStr; //int->string ageStr=String.valueOf(age); ageStr=12+""; //string->int try{//有可能字符串包含不能转化的字符 age=Integer.valueOf(ageStr); age=Integer.parseInt(ageStr); }catch (NumberFormatException e) { age=0; }

String[] strings={"s12","s2"}; List<String> strList = new ArrayList<String>(); //数组转list strList = Arrays.asList(strings); Collections.addAll(strList, strings); //list转数组 strings=(String[])strList.toArray(); strings = strList.toArray(new String[0]); strings =strList.toArray(new String[strList.size()]);