上網上找了半天, 沒一個滿意的, 乾脆自己搗騰著做了一個. 
 

介面比較簡單,不過使用還是比較方便的.

說明:
document.txt 中新增/刪除 抽籤的條目, 每行一個條目,可輸入數字作為隨機抽獎器用, 也可輸入人名當隨機點名器用.

propert.ini 可修改配置
fontFamily : 設定字型
fontSize : 設定字型大小(20~100)
fontWeight : 設定字型粗細(0~1), 預設0
width : 設定視窗寬度(600~MAX), 預設600, MAX螢幕大小
height : 設定視窗高度(400~MAX), 預設400 
amortize : 設定緩衝次數(1~30), 預設25

import java.awt.Toolkit;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.util.Properties;
 
public class Setting {
    //緩衝
    private int amortize = 25;
        //窗體寬度
        private int width = 600;
        //窗體高度
        private int height = 400;
        //字型大小
        private int fontSize = 100;
        //字型粗細
        private int fontWeight = 0;
        //字型
        private String fontFamily = "黑體";
        //螢幕寬
        private int screenWidth;
        //螢幕高
    private int screenHeight;
 
 
    Setting(){
            File file = new File("propert.ini");
                Properties props = new Properties();
                //儲存
                if (!file.exists()) {
                        try {
                                props.put("width", "600");
                                props.put("height", "400");
                                props.put("fontSize", "100");
                                props.put("fontWeight", "0");
                                props.put("fontFamily", "黑體");
                                props.put("amortize", "25");
                                props.store(new BufferedWriter(
                                                        new OutputStreamWriter(
                                                        new FileOutputStream(file), "gbk")), null);
                        } catch (UnsupportedEncodingException e) {
                                e.printStackTrace();
                        } catch (FileNotFoundException e) {
                                e.printStackTrace();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }else {
                        //讀取
                        try (BufferedReader br = new BufferedReader(new FileReader(file))){
                                props.load(br);
                            setFontFamily(props.getProperty("fontFamily").trim());
                            setFontSize(props.getProperty("fontSize").trim());
                            setFontWeight(props.getProperty("fontWeight").trim());
                            setWidth(props.getProperty("width").trim());
                            setHeight(props.getProperty("height").trim());
                            setAmortize(props.getProperty("amortize").trim());
                        } catch (FileNotFoundException e) {
                                e.printStackTrace();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
    }
     
        public int getAmortize() {
                return amortize;
        }
        public void setAmortize(String amortize) {
                Integer am;
                if (!amortize.matches("[0-9]*")) {
                        this.amortize = 1;
                        return;
                }else{
                        am = new Integer(amortize);
                        if (am > 30 || am < 1) {
                                am = 30;
                        }
                }
                this.amortize = am;
        }
        public int getWidth() {
                return width;
        }
        public void setWidth(String width) {
                Integer wi;
                if (width.equalsIgnoreCase("MAX")) {
                        this.width = getScreenWidth();
                        return;
                }
                if (!width.matches("[0-9]*")) {
                        this.width = 600;
                        return;
                }else{
                        wi = new Integer(width);
                        if (wi > getScreenWidth()) {
                                wi = getScreenWidth();
                        }
                        if (wi < 600) {
                                wi = 600;
                        }
                }
                this.width = wi;
        }
        public int getHeight() {
                return height;
        }
        public void setHeight(String height) {
                Integer hei;
                if (height.equalsIgnoreCase("MAX")) {
                        this.height = getScreenHeight();
                        return;
                }
                if (!height.matches("[0-9]*")) {
                        this.height = 400;
                        return;
                }else{
                        hei = new Integer(height);
                        if (hei > getScreenHeight()) {
                                hei = getScreenHeight();
                        }
                        if (hei < 400) {
                                hei = 400;
                        }
                }
                this.height = hei;
        }
        public int getFontSize() {
                return fontSize;
        }
        public void setFontSize(String fontSize) {
                Integer fon;
                if (!fontSize.matches("[0-9]*")) {
                        this.height = 20;
                        return;
                }else{
                        fon = new Integer(fontSize);
                        if (fon < 20) {
                                fon = 20;
                        }
                        if (fon > 100) {
                                fon = 100;
                        }
                }
                this.fontSize = fon;
        }
        public int getFontWeight() {
                return fontWeight;
        }
        public void setFontWeight(String fontWeight) {
                int fw;
                switch (fontWeight) {
                case "0":
                        fw = 0;
                        break;
                case "1":
                        fw = 1;
                        break;
                default:
                        fw = 0;
                        break;
                }
                this.fontWeight = fw;
        }
        public String getFontFamily() {
                return fontFamily;
        }
        public void setFontFamily(String font) {
                this.fontFamily = font;
        }
 
    public  void setScreenWidth(int screenWidth){
        this.screenWidth=screenWidth;
    }
    public void setScreenHeight(int screenHeight){
        this.screenHeight=screenHeight;
    }
    public int getScreenWidth(){
        setScreenWidth((int)Toolkit.getDefaultToolkit().getScreenSize().width);
        return screenWidth;
    }
    public int getScreenHeight(){
        setScreenHeight((int)Toolkit.getDefaultToolkit().getScreenSize().height);
        return screenHeight - 40;
    }
}
 

這是主視窗

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextPane;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
 
 
public class Frame_name extends JFrame{
        Setting set = new Setting();
    //緩衝
    private int amortize = set.getAmortize();
        //窗體寬度
        private int width = set.getWidth();
        //窗體高度
        private int height = set.getHeight();
        //字型大小
        private int fontSize = set.getFontSize();
        //字型粗細
        private int fontWeight = set.getFontWeight();
        //字型
        private String fontFamily = set.getFontFamily();
         
        JTextPane text = new JTextPane();
        JButton but = new JButton("開始抽籤");
        JPanel jpUp = new JPanel();
        JPanel jpCenter = new JPanel();
        JPanel jpDown = new JPanel();
        List<String> nameList =new ArrayList<String>();
        //建立視窗
        Frame_name(){
                setTitle("隨機抽籤器");
                //設定視窗位置
                setLocation((set.getScreenWidth() - width) / 2,(set.getScreenHeight() - height) / 2);
                //設定視窗大小
                setSize(width,height);
                //禁止調整視窗大小
                setResizable(false);
                //設定主視窗為絕對佈局
                setLayout(null);
                add(jpUp);
                add(jpCenter);
                add(jpDown);
                 
                jpUp.setBounds(0,0,width,80);
                jpUp.setLayout(new FlowLayout());
                 
                jpCenter.setBounds(0,80,width,height-200);
                jpCenter.setLayout(new BorderLayout());
                jpCenter.add(text,BorderLayout.CENTER);
                //字型
                text.setFont(new Font(fontFamily,fontWeight,fontSize));
                //顏色
                text.setForeground(Color.RED);
                //文字居中
                StyledDocument doc = text.getStyledDocument();
                SimpleAttributeSet center = new SimpleAttributeSet();
                StyleConstants.setAlignment(center, StyleConstants.ALIGN_CENTER);
                doc.setParagraphAttributes(0, doc.getLength(), center, false);
                //禁止操作文字域
                text.setEditable(false);
                //背景透明
                text.setOpaque(false);
                 
                jpDown.setBounds(0,height-120,width,120);
                jpDown.setLayout(new FlowLayout());
                jpDown.add(but);
                //隱藏按鈕焦點框
                but.setFocusPainted(false);
                //按鈕字型及大小
                but.setFont(new java.awt.Font("微軟雅黑",1,35));
                //監聽按鈕事件
                but.addActionListener((ActionEvent e) -> runTest());
                //預設按X鍵關閉程式
                setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                //啟用視窗
                setVisible(true);
        }
        //獲取條目集合
        public void name(){
                File file = new File("document.txt");
                if (!file.exists()) {
                        //如果檔案不存在則自行建立
                        try (BufferedWriter fw = new BufferedWriter(new FileWriter(file))){
                                fw.write("001" + "\n");
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
                //如果存在則讀取
                try (BufferedReader bufw = new BufferedReader(new FileReader(file))){
                        String name;
                        while ((name = (bufw.readLine()).trim()) != null ) {
                                nameList.add(name);
                        }
                } catch (IOException e) {
                        e.printStackTrace();
                } catch (NullPointerException e) {
                        e.printStackTrace();
                }
        }
        //顯示條目
        private void runTest(){
                new Thread(() -> {
                        for (int i = 0; i < amortize; i++) {
                                try {
                                        //設定條目標題文字
                                        text.setText(randomName());
                                        Thread.sleep(50 + i * (i/4));
                                } catch (InterruptedException ee) {
                                        ee.printStackTrace();
                                }
                        }
                }).start();
        }
        //隨機抽取一個條目
        private String randomName(){
                Random r = new Random(System.currentTimeMillis());
                int s = r.nextInt(nameList.size());
                return nameList.get(s);
        }
         
}