Update Test.java

src/Test.java

-import java.io.BufferedReader;
-import java.io.BufferedWriter;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.InputStreamReader;
-
-public class Test {
-	
-	public static void main(String[] args)  {
-		test1();
-	}
-	public static void test1(){
-		String param="1225sddfh";
-		System.out.println(param.substring(0,1));
-		int s=param.length();
-		System.out.println(s);
-	}
-	
-	
-	public static void reader() throws IOException{
-		File fileName=new File("D:\\test.txt");
-		try {
-			fileName.createNewFile();
-			BufferedWriter bWriter=new BufferedWriter(new FileWriter(fileName));
-			bWriter.write("哈哈哈哈");
-			bWriter.flush();
-			bWriter.close();
-		} catch (IOException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
-		
-		
-		 InputStreamReader reader = new InputStreamReader(  
-                 new FileInputStream(fileName)); // 建立一个输入流对象reader  
-         BufferedReader br = new BufferedReader(reader); // 建立一个对象，它把文件内容转成计算机能读懂的语言  
-         String line = "";  
-         line = br.readLine();   
-         while (line != null) {  
-             line = br.readLine(); // 一次读入一行数据  
-         }  
-         System.out.println(line);
-	}
-
-}
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+public class Test {
+	
+	public static void main(String[] args)  {
+		test1();
+	}
+	public static void test1(){
+		String param="1225sddfh";
+		System.out.println(param.substring(0,1));
+		int s=param.length();
+		System.out.println(s);
+	}
+	
+	
+	public static void reader() throws IOException{
+		File fileName=new File("D:\\test.txt");
+		try {
+			fileName.createNewFile();
+			BufferedWriter bWriter=new BufferedWriter(new FileWriter(fileName));
+			bWriter.write("哈哈哈哈呵呵呵呵");
+			bWriter.flush();
+			bWriter.close();
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		
+		
+		 InputStreamReader reader = new InputStreamReader(  
+                 new FileInputStream(fileName)); // 建立一个输入流对象reader  
+         BufferedReader br = new BufferedReader(reader); // 建立一个对象，它把文件内容转成计算机能读懂的语言  
+         String line = "";  
+         line = br.readLine();   
+         while (line != null) {  
+             line = br.readLine(); // 一次读入一行数据  
+         }  
+         System.out.println(line);
+	}
+
+}