Java Java.io.StringBufferInputStream用法及代码示例

// Java program illustrating the working of StringBufferInputStream class methods 
// read(), skip(), available(), reset() 
// read(char[] char_array, int offset, int maxlen) 
  
import java.io.*; 
public class NewClass 
{ 
    public static void main(String[] args) throws IOException 
    { 
  
        String str1 = "Hello Geeks"; 
        String str2 = "GeeksForGeeks"; 
        StringBufferInputStream Geek_buffer1 = new StringBufferInputStream(str1); 
        StringBufferInputStream Geek_buffer2 = new StringBufferInputStream(str2); 
  
        // USe of available() : to count total bytes to be read 
        System.out.println("Use of available() 1 : "+ Geek_buffer1.available()); 
  
        int a = 0; 
        System.out.print("Use of read() method : "); 
          
        // Use of read() method : reading each byte one by one 
        while((a = Geek_buffer1.read()) != -1) 
        { 
            // Converting byte to char 
            char c1 = (char)a; 
            System.out.println(c1); 
  
            // Use of skip() method 
            long char_no = Geek_buffer1.skip(1); 
            System.out.println("Characters Skipped : "+ (c1+1)); 
  
        } 
        System.out.println(""); 
  
        // USe of available() : to count total bytes to be read 
        System.out.println("Use of available() 2 : "+ Geek_buffer2.available()); 
  
          
        byte[] buffer = new byte[15]; 
      
        // Use of read(char[] char_array, int offset, int maxlen): 
        // reading a part of array 
        Geek_buffer2.read(buffer, 1, 2); 
        int b = 0; 
  
        System.out.print("read(char[] char_array, int offset, int maxlen): "); 
        while((b = Geek_buffer2.read()) != -1) 
        { 
            char c2 = (char)b; 
            System.out.print(c2); 
        } 
        System.out.println(""); 
  
        // Use of reset() : to reset str1 for reading again 
        Geek_buffer1.reset(); 
        int i = 0; 
        System.out.print("\nUse of read() method again after reset() : "); 
          
        // Use of read() method : reading each character one by one 
        while((i = Geek_buffer1.read()) != -1) 
        { 
            char c3 = (char)i; 
            System.out.print(c3); 
        } 
    } 
}