• 2022-06-14 问题

    以下程序的运行结果是()import java.util.*; public class TreeMapExample { public static void main(String[] args){ SortedMap map = new TreeMap();//创建TreeMap实例对象 map.put(3,"John"); map.put(2, "Tome"); map.put(1,"Todd"); map.put(5,"Jane"); map.put(4, "William");//新添加一个元素,sortedMap将会自动排序 for(Object k : map.keySet()){//以for-each语句对sortedMap集合进行遍历 System.out.println(k + ":" + map.get(k)); } } }

    以下程序的运行结果是()import java.util.*; public class TreeMapExample { public static void main(String[] args){ SortedMap map = new TreeMap();//创建TreeMap实例对象 map.put(3,"John"); map.put(2, "Tome"); map.put(1,"Todd"); map.put(5,"Jane"); map.put(4, "William");//新添加一个元素,sortedMap将会自动排序 for(Object k : map.keySet()){//以for-each语句对sortedMap集合进行遍历 System.out.println(k + ":" + map.get(k)); } } }

  • 2022-06-14 问题

    以下程序的运行结果是()import java.util.*;public class TreeMapExample { public static void main(String[] args){ SortedMap map = new TreeMap();//创建TreeMap实例对象 map.put(3,"John"); map.put(2, "Tome"); map.put(1,"Todd"); map.put(5,"Jane"); map.put(4, "William");//新添加一个元素,sortedMap将会自动排序 for(Object k : map.keySet()){//以for-each语句对sortedMap集合进行遍历 System.out.println(k + ":" + map.get(k)); } }} A: 编译错误 B: 运行时异常 C: 1:Todd

    以下程序的运行结果是()import java.util.*;public class TreeMapExample { public static void main(String[] args){ SortedMap map = new TreeMap();//创建TreeMap实例对象 map.put(3,"John"); map.put(2, "Tome"); map.put(1,"Todd"); map.put(5,"Jane"); map.put(4, "William");//新添加一个元素,sortedMap将会自动排序 for(Object k : map.keySet()){//以for-each语句对sortedMap集合进行遍历 System.out.println(k + ":" + map.get(k)); } }} A: 编译错误 B: 运行时异常 C: 1:Todd

  • 2022-06-14 问题

    编译运行以下程序的结果是:import java.util.TreeSet;public class Test02 {public static void main(String[] args) {Map map = new TreeMap(); // 创建TreeMap实例对象map.put(3, "John");map.put(2, "Tome");map.put(1, "Todd");map.put(5, "Jane");map.put(4, "William");// 新添加一个元素,sortedMap将会自动排序for (Object k : map.keySet()) {// 以for-each语句对sortedMap集合进行遍历System.out.println(k + ":" + map.get(k));}}} A: 编译错误 B: 运行时异常 C: 1:Todd2:Tome3:John4:William5:Jane

    编译运行以下程序的结果是:import java.util.TreeSet;public class Test02 {public static void main(String[] args) {Map map = new TreeMap(); // 创建TreeMap实例对象map.put(3, "John");map.put(2, "Tome");map.put(1, "Todd");map.put(5, "Jane");map.put(4, "William");// 新添加一个元素,sortedMap将会自动排序for (Object k : map.keySet()) {// 以for-each语句对sortedMap集合进行遍历System.out.println(k + ":" + map.get(k));}}} A: 编译错误 B: 运行时异常 C: 1:Todd2:Tome3:John4:William5:Jane

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