摘要:1 import java.util.HashMap; 2 import java.util.Map; 3 import java.util.Set; 4 import java.util.StringTokenizer; 5 import java.util.TreeMap; 6 7 public
阅读全文
摘要:1 import java.util.*; 2 import java.util.Map.Entry; 3 4 public class S22_7 { 5 6 public static void main(String[] args) { 7 // TODO Auto-generated met
阅读全文
摘要:1 import java.awt.BorderLayout; 2 import java.awt.Color; 3 import java.awt.FlowLayout; 4 import java.awt.event.ActionEvent; 5 import java.awt.event.Ac
阅读全文
摘要:1 import java.io.File; 2 import java.io.FileNotFoundException; 3 import java.util.*; 4 5 public class S22_5 { 6 7 public static void main(String[] arg
阅读全文
摘要:1 import java.io.File; 2 import java.io.FileNotFoundException; 3 import java.util.HashMap; 4 import java.util.Map; 5 import java.util.Scanner; 6 impor
阅读全文
摘要:1、描述Java集合框架。列出接口、便利抽象类和具体类。 Java集合框架支持2种容器:(1) 集合(Collection),存储元素集合 (2)图(Map),存储键值对。
阅读全文
摘要:1 import java.awt.*; 2 import java.awt.event.ActionEvent; 3 import java.awt.event.ActionListener; 4 import java.awt.event.MouseAdapter; 5 import java.
阅读全文
摘要:import java.awt.*; import java.util.Calendar; import java.util.GregorianCalendar; import javax.swing.*; import javax.swing.border.LineBorder; public c
阅读全文
摘要:import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Test_17_7 extends JFrame{ private StillClock stclk = new StillClock();
阅读全文
摘要:import java.awt.*; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.io.FileNotFoundException; import javax.swing.*; publi
阅读全文
摘要:import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.Ke
阅读全文
摘要:import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.io.FileNotFoundException;
阅读全文
摘要:1 public class Test_21_1<E> { 2 private int size; 3 private static final int CAPACITY = 3; 4 private E array[]; 5 6 public Test_21_1(){ 7 this(CAPACIT
阅读全文
摘要:1 import java.awt.BorderLayout; 2 import java.awt.Color; 3 import java.awt.Graphics; 4 import java.awt.GridLayout; 5 import java.awt.event.ActionEvent
阅读全文
摘要:1 import java.awt.*; 2 import java.awt.event.ActionEvent; 3 import java.awt.event.ActionListener; 4 import javax.swing.*; 5 6 public class ButtonDemo
阅读全文
摘要:1 import javax.swing.*; 2 import java.awt.*; 3 import java.awt.event.*; 4 5 public class Test_16_24 extends JFrame{ 6 JPanel butJP= new JPanel(); 7 St
阅读全文
摘要:1 import javax.swing.*; 2 import java.awt.*; 3 import java.awt.event.*; 4 import java.util.ArrayList; 5 6 public class Test_16_23 extends JFrame{ 7 pr
阅读全文
摘要:import javax.swing.*;import java.awt.*;import java.awt.event.*; public class Exercise16_22 extends JFrame { final static int NUMBER_OF_SLOTS = 9; fina
阅读全文
摘要:1 import java.awt.Graphics; 2 import java.awt.event.*; 3 import javax.swing.*; 4 5 public class Test_16_20 extends JFrame{ 6 7 public Test_16_20(){ 8
阅读全文