Stream Support 학습

mxxxjun · mxxxjun · commit 586a6d26b15b · 2023-12-18T04:08:19.000+09:00
diff --git a/Stream/des.pdf b/Stream/des.pdf
diff --git a/Stream/dest.pdf b/Stream/dest.pdf
diff --git a/Stream/format.txt b/Stream/format.txt
@@ -0,0 +1 @@
+  1234,      56.79, 문자열
diff --git a/Stream/src.pdf b/Stream/src.pdf
diff --git a/Stream/src/SupportStream/bufferBinary.java b/Stream/src/SupportStream/bufferBinary.java
@@ -0,0 +1,26 @@
+package SupportStream;
+
+import java.io.*;
+
+public class bufferBinary {
+    public static void main(String[] args){
+        try{
+            byte[] data = {3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9};
+            FileOutputStream fout = new FileOutputStream("test.buf");
+            BufferedOutputStream out = new BufferedOutputStream(fout);
+            out.write(data);
+            out.close();
+            System.out.println("Write Success");
+
+            BufferedInputStream in = new BufferedInputStream(new FileInputStream("test.buf"));
+            byte[] indata = new byte[15];
+            in.read(indata, 0, 15);
+            in.close();
+            for(byte b : indata){
+                System.out.print(b);
+            }
+        } catch(IOException e) {
+
+        }
+    }
+}
diff --git a/Stream/src/SupportStream/bufferText.java b/Stream/src/SupportStream/bufferText.java
@@ -0,0 +1,18 @@
+package SupportStream;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class bufferText {
+    public static void main(String[] args){
+        try{
+            BufferedReader in = new BufferedReader(new FileReader("애국가-Utf8nb.txt"));
+            char[] text = new char[1000];
+            int num = in.read(text);
+            System.out.println("읽은 문자 개수 = " + num);
+            System.out.println(text);
+            in.close();
+        } catch (IOException e) {}
+    }
+}
diff --git a/Stream/src/SupportStream/conin.java b/Stream/src/SupportStream/conin.java
@@ -0,0 +1,18 @@
+package SupportStream;
+
+import java.io.IOException;
+
+public class conin {
+    public static void main(String[] arg){
+        int name;
+        System.out.println("이름을 입력한 후 Enter를 누르시오(끝낼 때는 Ctrl + Z).");
+        for(;;){
+            try{
+                name = System.in.read();
+                if(name == -1) break;
+                System.out.print((char) name);
+            } catch (IOException e) {}
+        }
+        System.out.println("입력 완료");
+    }
+}
diff --git a/Stream/src/SupportStream/conin2.java b/Stream/src/SupportStream/conin2.java
@@ -0,0 +1,20 @@
+package SupportStream;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class conin2 {
+    public static void main(String[] args){
+        int name;
+        System.out.println("이름을 입력한 후 Enter를 누르시오(끝낼 때는 Cmd + Z)");
+        InputStreamReader r = new InputStreamReader(System.in);
+        for(;;){
+            try{
+                name = r.read();
+                if(name == -1) break;
+                System.out.print((char) name);
+            } catch (IOException e) {}
+        }
+        System.out.println("입력완료");
+    }
+}
diff --git a/Stream/src/SupportStream/conin3.java b/Stream/src/SupportStream/conin3.java
@@ -0,0 +1,17 @@
+package SupportStream;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class conin3 {
+    public static void main(String[] args){
+        InputStreamReader r = new InputStreamReader(System.in);
+        BufferedReader b = new BufferedReader(r);
+        try{
+            String str = b.readLine();
+            System.out.println(str);
+            System.out.println("입력완료");
+        } catch (IOException e) {}
+    }
+}
diff --git a/Stream/src/SupportStream/conin4.java b/Stream/src/SupportStream/conin4.java
@@ -0,0 +1,20 @@
+package SupportStream;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class conin4 {
+    public static void main(String[] args){
+        System.out.print("정수를 입력하시오 : ");
+        InputStreamReader r = new InputStreamReader(System.in);
+        BufferedReader b = new BufferedReader(r);
+        try{
+            String str = b.readLine();
+            int i = Integer.parseInt(str);
+            System.out.println("입력값의 2배 = " + i*2);
+        } catch (IOException e) {
+            System.out.println("입력 오류 발생");
+        }
+    }
+}
diff --git a/Stream/src/SupportStream/dataIo.java b/Stream/src/SupportStream/dataIo.java
@@ -0,0 +1,21 @@
+package SupportStream;
+
+import java.io.*;
+
+public class dataIo {
+    public static void main(String[] args){
+        try{
+            DataOutputStream out = new DataOutputStream(new FileOutputStream("test.dat"));
+            out.writeInt(1234);
+            out.writeDouble(3.14159265);
+            out.writeUTF("String 문자열");
+            System.out.println("Write SUCCESS");
+
+            DataInputStream in = new DataInputStream(new FileInputStream("test.dat"));
+            int i = in.readInt();
+            double d = in.readDouble();
+            String str = in.readUTF();
+            System.out.printf("i = %d, d = %f, str = %s",i,d,str);
+        } catch (IOException e) {}
+    }
+}
diff --git a/Stream/src/SupportStream/fileCopy.java b/Stream/src/SupportStream/fileCopy.java
@@ -0,0 +1,26 @@
+package SupportStream;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+public class fileCopy {
+    public static void main(String[] args){
+        long start = System.currentTimeMillis();
+        System.out.println("복사 시작");
+        int data;
+        try{
+            FileInputStream src = new FileInputStream("src.pdf");
+            FileOutputStream dest = new FileOutputStream("dest.pdf");
+            for(;;){
+                data = src.read();
+                if(data == -1) break;
+                dest.write(data);
+            }
+            src.close();
+            dest.close();
+            System.out.println("복사 완료");
+            System.out.println((System.currentTimeMillis()-start)/1000.0 + "초 걸림");
+        } catch (IOException e) {}
+    }
+}
diff --git a/Stream/src/SupportStream/fileCopy2.java b/Stream/src/SupportStream/fileCopy2.java
@@ -0,0 +1,24 @@
+package SupportStream;
+
+import java.io.*;
+
+public class fileCopy2 {
+    public static void main(String[] args){
+        long start = System.currentTimeMillis();
+        System.out.println("복사 시작");
+        int data;
+        try{
+            BufferedInputStream src = new BufferedInputStream(new FileInputStream("src.pdf"));
+            BufferedOutputStream dest = new BufferedOutputStream(new FileOutputStream("des.pdf"));
+            for(;;){
+                data = src.read();
+                if(data == -1) break;
+                dest.write(data);
+            }
+            src.close();
+            dest.close();
+        } catch (IOException e) {}
+        System.out.println("복사 완료");
+        System.out.println((System.currentTimeMillis() - start)/1000.0 + "초 걸림");
+    }
+}
diff --git a/Stream/src/SupportStream/printWriter.java b/Stream/src/SupportStream/printWriter.java
@@ -0,0 +1,14 @@
+package SupportStream;
+
+import java.io.PrintWriter;
+
+public class printWriter {
+    public static void main(String[] args) throws Exception{
+        PrintWriter out = new PrintWriter("format.txt");
+        int i = 1234;
+        double d = 56.789;
+        String str = "문자열";
+        out.printf("%6d, %10.2f, %s", i, d, str);
+        out.close();
+    }
+}
diff --git a/Stream/src/SupportStream/readLine.java b/Stream/src/SupportStream/readLine.java
@@ -0,0 +1,17 @@
+package SupportStream;
+
+import java.io.FileReader;
+import java.io.LineNumberReader;
+
+public class readLine {
+    public static void main(String[] args) throws Exception {
+        LineNumberReader in = new LineNumberReader(new FileReader("애국가-Utf8nb.txt"));
+        for(;;){
+            String line = in.readLine();
+            if(line == null) break;
+            int num = in.getLineNumber();
+            System.out.printf("%4d : %s\n", num, line);
+        }
+        in.close();
+    }
+}
diff --git a/Stream/src/SupportStream/readString.java b/Stream/src/SupportStream/readString.java
@@ -0,0 +1,25 @@
+package SupportStream;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+
+public class readString {
+    public static void main(String[] args){
+        String str = ReadFileToString("애국가-Utf8nb.txt");
+        System.out.println(str);
+    }
+
+    static String ReadFileToString(String path){
+        StringBuffer Result = new StringBuffer();
+        int ch;
+        try{
+            BufferedReader in = new BufferedReader(new FileReader(path));
+            for(;;){
+                ch = in.read();
+                if(ch == -1) break;
+                Result.append((char) ch);
+            }
+        } catch(Exception e) {}
+        return Result.toString();
+    }
+}
diff --git a/Stream/src/SupportStream/scanner.java b/Stream/src/SupportStream/scanner.java
@@ -0,0 +1,13 @@
+package SupportStream;
+
+import java.util.Scanner;
+
+public class scanner {
+    public static void main(String[] args){
+        System.out.println("정수를 입력하시오 : ");
+        Scanner scan = new Scanner(System.in);
+        int i = scan.nextInt();
+        scan.close();
+        System.out.println("입력 값의 2배 = " + i*2);
+    }
+}
diff --git a/Stream/test.buf b/Stream/test.buf
@@ -0,0 +1 @@
+			
diff --git a/Stream/test.dat b/Stream/test.dat
