860709

   TextView  tv = (TextView) findViewById(R.id.textView01); 
  String  str = "하나의 텍스트뷰에서 스타일 다르게 적용하기"; 
  
  final SpannableStringBuilder sps = new SpannableStringBuilder(str); 
  sps.setSpan(new AbsoluteSizeSpan(30), 4, 10,  Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 
  tv.append(sps); 

TextView tv = (TextView) findViewById(R.id.textView01); 
   String str = "하나의 텍스트뷰에서 스타일  다르게 적용하기"; 
   
  final SpannableStringBuilder  sps = new SpannableStringBuilder(str); 
  sps.setSpan(new ForegroundColorSpan(-6697729), 4, 10, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 
  tv.append(sps); 

public String on(){
  첫글자 대문자로
  StringBuilder sb = new StringBuilder("한국");
  sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));
  Log.e(" === ", " === " + sb.toString());
  return sb.toString();
 }

import java.awt.*;
import java.awt.event.*;

class GraphicsEx1 extends Frame {
 public static void main(String[] args) {
   new GraphicsEx1("GraphicsEx1");
 }
 
 public void paint(Graphics g){
   g.setFont(new  Font("Serif" , Font.PLAIN , 15));
   g.drawString("Graphics 를 이용해서 그림을 그립니다." , 10, 50);
   g.drawOval(50,100, 50 , 50);
   g.setColor(Color.blue);
   g.fillOval(100, 100,50, 50);
   g.setColor(Color.red);
   g.drawLine(100,100, 150,150);
   g.fillRoundRect(200, 100, 120 , 80 , 30 , 30);
   g.setColor(Color.orange);
   g.fillPolygon(new int[]{ 50, 100, 150, 200} ,
       new int[] { 250, 200 , 200, 250}, 4);
   g.setColor(Color.cyan);
   g.fillArc(250 , 200 ,100 ,100 ,0 ,120);
 }
 public GraphicsEx1(String title){
  super(title);
  addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent we){
      System.exit(0);
    }
  });
  setBounds(100,100, 400,300);
  setVisible(true);

}
}

import java.awt.*;
import java.awt.event.*;
import java.io.*;


class TextEditor extends Frame {
 String fileName;
 TextArea content;
 MenuBar mb;
 Menu mfile;
 MenuItem minew , miopen , misaveas , miexit ;

 TextEditor(String title){
   super(title);
   content = new TextArea();
   add(content);

   mb = new MenuBar();
   mfile = new Menu("파일");
   minew = new MenuItem("New");
   miopen = new MenuItem("open");
   misaveas = new MenuItem("save As");
   miexit = new MenuItem("Exit");
   
   mfile.add(mfile);
   mfile.add(minew);
   mfile.add(miopen);
   mfile.add(misaveas);
   mfile.add(miexit);

   mb.add(mfile);  
   setMenuBar(mb);  // 프레임에 menubar 를 포함시긴다
   
   // 메뉴에 이벤트 핸들러를 등록한다
  MyHandler handler = new MyHandler();
  minew.addActionListener(handler);
  miopen.addActionListener(handler);
  misaveas.addActionListener(handler);
  miexit.addActionListener(handler);

  setSize(300, 200);
  setVisible(true);

 }

 // 선택된 파일의 내용을 읽어서  TextArea에 보여주는 메서드
 void fileOpen(String fileName){
   FileReader fr;
   BufferedReader br;
   StringWriter sw;

   try{
     fr = new FileReader(fileName);
     br = new BufferedReader(fr);
     sw = new StringWriter();

     int ch = 0;
     while((ch=br.read()) != -1) {
      sw.write(ch);
     }
     br.close();
     content.setText(sw.toString());
   }catch (IOException e){
    e.printStackTrace();
   }
 }

 void saveAs(String fileName){
   FileWriter fw;
   BufferedWriter bw;
   
   try{
    fw = new FileWriter(fileName);
    bw = new BufferedWriter(fw);
    bw.write(content.getText());
    bw.close();
   } catch (IOException ie){
    ie.printStackTrace();
   }
 }
 public static void main(String args[]){
   TextEditor main = new TextEditor("Text Editor");
 }

 //메뉴를 클릭했을 때 메뉴별 처리코드

 class MyHandler implements ActionListener {
   public void actionPerformed(ActionEvent e){
    String command = e.getActionCommand();

   if(command.equals("New")){
    content.setText("ff");
   }else if (command.equals("open")){
    FileDialog fileOpen =
     new FileDialog(TextEditor.this , "파일열기");
    fileOpen.setVisible(true);
    fileName = fileOpen.getDirectory() + fileOpen.getFile();
    System.out.println(fileName);
    fileOpen(fileName);
   } else if (command.equals("save As")){
     FileDialog fileSave =
      new FileDialog(TextEditor.this , "파일저장" , FileDialog.SAVE);
     fileSave.setVisible(true);
     fileName = fileSave.getDirectory() + fileSave.getFile();
     System.out.println(fileName);
     //현재 TextArea 의 내용을 선택된 저장한다.
     saveAs(fileName);
   } else if (command.equals("Exit")) {
    System.exit(0);
   }
   }
 }}

import java.awt.*;
import java.awt.event.*;

class  TextComponentEventTes extends Frame  {
 
  TextField tf;
  TextArea ta;
 
 TextComponentEventTes(String title){
  super(title);
 
   tf = new TextField();
   ta = new TextArea();
   add(ta, "Center");
   add(tf, "South");

   tf.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent e){
     ta.append(tf.getText() + "\n");
     tf.setText("");
     tf.requestFocus();
    }
  });

  ta.setEditable(false);
  setSize(300, 200);
  setVisible(true);
  tf.requestFocus();
 
  addWindowListener(new WindowAdapter(){
    public void windowClosing(WindowEvent evt){
     setVisible(false);
     dispose();
     System.exit(0);
    }
  });


 }
 public static void main(String args[]){
   TextComponentEventTes mainWin =
     new TextComponentEventTes("TextComponentEventTest");

 

 }
}