package study; import java.util.ArrayList; /** * @author shkstart * @date 2018/7/13 0013 - 下午 1:21 * * 1. IDEA中代码模板所处的位置：settings - Editor - Live Templates / Postfix Completion * 2. 常用的模板 */ public class TemplatesTest { //模板六： prsf：可生成 private static final // private static final Customer CUST = new Customer(); //变形：psf public static final int NUM = 1; //变形：psfi public static final int NUM2 = 2; //变形：psfs public static final String NATION = "china"; //模板一：psvm public static void main(String[] args) { //模板二：sout System.out.println("hello!"); //变形：soutp / soutm / soutv / xxx.sout System.out.println("args = [" + args + "]"); System.out.println("TemplatesTest.main"); int num1 = 10; System.out.println("num1 = " + num1); int num2 = 20; System.out.println("num2 = " + num2); System.out.println(num1); //模板三：fori String[] arr = new String[]{"Tom","Jerry","HanMeimei","Lilei"}; for (int i = 0; i < arr.length; i++) { System.out.println(arr[i]); } //变形：iter for (String s : arr) { System.out.println(s); } //变形：itar for (int i = 0; i < arr.length; i++) { String s = arr[i]; System.out.println(s); } //模板四：list.for ArrayList list = new ArrayList(); list.add(123); list.add(345); list.add(567); for (Object o : list) { } //变形：list.fori for (int i = 0; i < list.size(); i++) { } //变形：list.forr 倒序遍历 for (int i = list.size() - 1; i >= 0; i--) { } } public void method(){ System.out.println("TemplatesTest.method"); ArrayList list = new ArrayList(); list.add(123); list.add(345); list.add(567); //模板五：ifn if (list == null) { } //变形:inn if (list != null) { } //变形：xxx.nn / xxx.null if (list == null) { } if (list != null) { } } }