转: JAVA字符串格式化-String.format()的使用 常规类型的格式化 String类的format()方法用于创建格式化的字符串以及连接多个字符串对象.熟悉C语言的同学应该记得C语言的sprintf()方法,两者有类似之处.format()方法有两种重载形式. format(String format, Object... args) 新字符串使用本地语言环境,制定字符串格式和参数生成格式化的新字符串. format(Locale locale, String format, Ob
20170104问题解析请点击今日问题下方的"[Java每日一题]20170105"查看(问题解析在公众号首发,公众号ID:weknow619) package Jan2017; import java.util.ArrayList; import java.util.List; public class Ques0105 { public static void main(String[] args) { List<String> list = new ArrayList
package Dec2016; public class Ques1223 { public static void main(String[] args){ Integer obj = Integer.valueOf(args[args.length - 1]); int i = obj.intValue(); if (args.length > 1) { System.out.println(i); } if (args.length > 0) { System.out.println(
package Dec2016; import java.util.Arrays; public class Ques1219 { public static void main(String[] args) { int num = 2; Dog[] dogs01 = new Dog[num]; // dogs01中有两只狗 for(int i = 0; i < num; i++){ dogs01[i] = new Dog(i, Color.values()[i]); } Dog[] dogs0
package Dec2016; import java.util.ArrayList; import java.util.List; public class Ques1214 { public static void main(String[] args){ final List<String> tickets = new ArrayList<String>(); for(int i = 0; i < 1000; i++){ tickets.add("高铁票-&
package Dec2016; public class Ques1207 { public static void main(String[] args) { new Test(); new Test(1); new Test("1"); System.out.println("实例数量为:"+Test.getNumOfInstances()); } } class Test{ private static int numOfInstances = 0; //
package Nov2016; import java.util.Scanner; public class Ques1123 { public static void main(String[] args) { Scanner num = new Scanner(System.in); System.out.print("请输入数量:"); while(num.hasNextInt()){ int n = num.nextInt(); // 输入数量+1000后与1500比较 if
package Nov2016; import java.io.Serializable; // V1.0版 public class Ques1114 implements Serializable{ private static final long serialVersionUID = 1L; public final int num; public Ques1114(){ num = 123; } } // 序列化到磁盘 public class TestSerialize{ publi
package Nov2016; import java.util.TreeSet; public class Ques1108 { public static void main(String[] args){ Animal dog = new Animal("dog"); Animal cat = new Animal("cat"); TreeSet<Animal> animals = new TreeSet<Animal>(); ani
package Nov2016; import java.util.HashMap; import java.util.Map; public class Ques1101 { public static void main(String[] args) { HashMap<Integer, Integer> map = new HashMap<Integer, Integer>(); for (int i = 0; i < 100; i++) { map.put(i, i)
package Oct2016; public class Ques1027 { public static void main(String[] args) { System.out.println(1%2==1?"奇数":"偶数"); System.out.println(2%2==1?"奇数":"偶数"); System.out.println(0%2==1?"奇数":"偶数");
20161021问题解析请点击今日问题下方的"[Java每日一题]20161024"查看 package Oct2016; public class Ques1024 { public static void main(String[] args) { int num = 0; for(int i = 0; i < 100; i++){ num = num++; } System.out.println("num="+num); } } 今日问题: 请问主程序