System.out.println("当前时间戳(秒): " + System.currentTimeMillis()/1000);
System.out.println("当前时间戳(毫秒): " + System.currentTimeMillis()); public class test { public static void main(String[] args) { &...
public class test { public static void main(String[] args) { &...
Java5 引入了一种主要用于数组的增强型 for 循环,类似js中的for inpublic class Member { public static void main(String[]&...
pattern表示正则表达式,接收正则表达式作为参数例子:String content = "my name is gaojiufeng"; String pattern = "....
java匹配一个字符串在另外一个字符串中出现的次数,java正则start,java正则end// 正则 String pattern = "\\bgao\\b"; // 字符串 String content ...