fori

for (int i = 0; i < ; i++) { }

sout

System.out.println()

psvm/main

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

psfs

public static final String

thr

throw new

.var

Object o = new Object();

.varl

var o = new Object();需要安装lombok插件

.nn/.notnull

if (new Object() != null) {}

.field

可声明成类属性

.null

if (new Object() == null) { }

.lambda

() -> new Object()

.cast

(() new Object())

.arg/.par

(new Object())

.castvar

= () new Object();

.inst/.instanceof

new Object() instanceof ? (() new Object()) : null;

.opt

Optional.of(new Object())

.reqnonnull

Objects.requireNonNull(new Object())

.return

return new Object();

.serr

System.err.println(new Object());

.souf

System.out.printf("", new Object());

.sout

System.out.println(new Object());

.soutv

System.out.println("new Object() = " + new Object());

.try

try {
new Object()
} catch (Exception e) {
e.printStackTrace();
}

.synchronized

synchronized (new Object()) {}