psvm : 可生成 main 方法
public static void main(String[] args) { }
sout : System.out.println() 快捷输出。
System.out.println();
name.sout
String name = "xiaoxiao"; System.out.println(name);
soutp=System.out.println("方法形参名 = " + 形参名);
public static void test(String bookId,String userId) { System.out.println("bookId = " + bookId + ", userId = " + userId); }
soutv=System.out.println("变量名 = " + 变量);
String name = "xiaoxiao"; System.out.println("name = " + name);
soutm=System.out.println(“当前类名.当前方法”);
public class Demo088 { public static void test(String bookId,String userId) { System.out.println("Demo088.test"); } }
fori : 可生成 for 循环
for (int i = 0; i < 10; i++) { }
iter:可生成增强 for 循环
String[] a; for (String s : a) { }
itar:可生成普通 for 循环
String[] a; for (int i = 0; i < a.length; i++) { String s = a[i]; }
strList.for : 可生成集合 list 的 for 循环
List<String> strList = new ArrayList<>(); for (String s : strList) { }
strList.fori 正序遍历
for (int i = 0; i < strList.size(); i++) { }
strList.forr 倒序遍历
for (int i = strList.size() - 1; i >= 0; i--) { }
ifn:可生成 if(a= null),a为前面定义的变量
if (a == null) { }
inn:可生成 if(a!= null)
if (a != null) { }
name.nn
if (name != null) { }
name.null
if (name == null) { }
prsf:可生成 private static final
psf:可生成 public static final
psfi:可生成 public static final int
psfs:可生成 public static final String