Java by API/java.io/InputStreamReader

InputStreamReader: close()

   <source lang="java">

import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; public class Main {

 public static void main(String[] args) {
   try {
     char[] chars = new char[2];
     chars[0] = "\u4F60";
     chars[1] = "\u597D";
     String encoding = "GB18030";
     File textFile = new File("C:\\temp\\myFile.txt");
     PrintWriter writer = new PrintWriter(textFile,encoding);
     writer.write(chars);
     writer.close();
     // read back
     InputStreamReader reader = new InputStreamReader(new FileInputStream(textFile), encoding);
     char[] chars2 = new char[2];
     reader.read(chars2);
     System.out.print(chars2[0]);
     System.out.print(chars2[1]);
     reader.close();
   } catch (IOException e) {
     System.out.println(e.toString());
   }
 }

}

 </source>
   
  
 
  

new InputStreamReader(InputStream in)

   <source lang="java">

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class MainClass {

 public static void main(String args[]) {
   try {
     System.out.print("Enter your name: ");
     InputStreamReader reader = new InputStreamReader(System.in);
     BufferedReader in = new BufferedReader(reader);
     String name = in.readLine();
     System.out.println("Hello, " + name + ". Enter three ints...");
     int[] values = new int[3];
     double sum = 0.0;
     for (int i = 0; i < values.length; i++) {
       System.out.print("Number " + (i + 1) + ": ");
       String temp = in.readLine();
       values[i] = Integer.parseInt(temp);
       sum += values[i];
     }
     System.out.println("The average equals " + sum / values.length);
   } catch (IOException e) {
     e.printStackTrace();
   }
 }

}

 </source>
   
  
 
  

new InputStreamReader(InputStream in, String charsetName)

   <source lang="java">

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; public class MainClass {

 public static void Converter(String input, String output) {
   try {
     FileInputStream fis = new FileInputStream(new File(input));
     BufferedReader in = new BufferedReader(new InputStreamReader(fis, "SJIS"));
     FileOutputStream fos = new FileOutputStream(new File(output));
     BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fos, "UTF8"));
     int len = 80;
     char buf[] = new char[len];
     int numRead;
     while ((numRead = in.read(buf, 0, len)) != -1)
       out.write(buf, 0, numRead);
     out.close();
     in.close();
   } catch (IOException e) {
     System.out.println("An I/O Exception Occurred: " + e);
   }
 }
 public static void main(String args[]) {
   MainClass.Converter(args[0], args[1]);
 }

}

 </source>