/**

*測試字符串連接符 + 的用法和運算符+區(qū)別

*/

public class TestOperator06{

????public static void main(String[]args){

????????String a = "3";

????????int b = 4;

????????int b1 = 5;

????????System.out.println(a+b+b1);//String為字符串 字符串"3"使 + 變成字符串連接符，后面????????????+4+5都是連接符

????????//從左往右判定，"3"+4變成字符串"34","34"+5變成"345"

????????System.out.println(b+b1+a);//判定順序從左往右，int的b+b1是運算符+ 加和后遇到字????????????符串的+變成連接符

????????//字符型char 遇到加號會進行運算 字符串String遇到加號會變成連接符

????????char c1 = 'h';

????????char c2 = 'i';

????????System.out.println(c1+c2);

????????System.out.println(""+c1+c2);

????????//直接print字符型char會輸出字符對應(yīng)的數(shù)字，在最前面加上空字符串""+使+變成連接????????????符，后面的字符型就顯示字符了

????}

}