El método compact() de java.nio.FloatBuffer Class se usa para compactar el búfer dado.
Los valores entre la posición actual del búfer y su límite se copian al principio del búfer. Luego, la posición del búfer se establece en n+1 y su límite se establece en su capacidad. La posición del búfer se establece en el número de flotantes copiados.
Sintaxis:
public abstract FloatBuffer compact()
Valor de retorno: este método devuelve el nuevo FloatBuffer con el mismo contenido que el de este búfer.
Excepción: este método lanza ReadOnlyBufferException , si este búfer es de solo lectura.
El siguiente programa ilustra el método compact() :
Ejemplos 1:
// Java program to demonstrate // compact() method import java.nio.*; import java.util.*; public class GFG { public static void main(String[] args) { // Declaring the capacity of the FloatBuffer int capacity = 10; // Creating the FloatBuffer // creating object of floatbuffer // and allocating size capacity FloatBuffer fb = FloatBuffer.allocate(capacity); // putting the value in floatbuffer fb.put(8.56F); fb.put(9.61F); fb.put(9.61F); // print the FloatBuffer System.out.println("Original FloatBuffer: " + Arrays.toString(fb.array())); System.out.println("Position: " + fb.position()); System.out.println("limit: " + fb.limit()); // Creating a compacted FloatBuffer of same FloatBuffer // using compact() method FloatBuffer floatBuffer = fb.compact(); // print the FloatBuffer System.out.println("\nCompacted FloatBuffer: " + Arrays.toString(floatBuffer.array())); System.out.println("Position: " + floatBuffer.position()); System.out.println("limit: " + floatBuffer.limit()); // putting the value in compacted floatbuffer floatBuffer.put(9.61F); // print the FloatBuffer System.out.println("\nUpdated Compacted FloatBuffer: " + Arrays.toString(floatBuffer.array())); System.out.println("Position: " + floatBuffer.position()); System.out.println("limit: " + floatBuffer.limit()); } }
Original FloatBuffer: [8.56, 9.61, 9.61, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] Position: 3 limit: 10 Compacted FloatBuffer: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] Position: 7 limit: 10 Updated Compacted FloatBuffer: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 9.61, 0.0, 0.0] Position: 8 limit: 10
Ejemplos 2:
// Java program to demonstrate // compact() method import java.nio.*; import java.util.*; public class GFG { public static void main(String[] args) { // Declaring the capacity of the FloatBuffer int capacity = 10; // Creating the FloatBuffer try { // creating object of FloatBuffer // and allocating size capacity FloatBuffer fb = FloatBuffer.allocate(capacity); // putting the value in floatbuffer fb.put(8.56F); fb.put(9.61F); fb.put(9.61F); fb.rewind(); // Creating a read-only copy of FloatBuffer // using asReadOnlyBuffer() method FloatBuffer fb1 = fb.asReadOnlyBuffer(); // print the ReadOnlyBuffer System.out.print("ReadOnlyBuffer FloatBuffer: "); while (fb1.hasRemaining()) System.out.print(fb1.get() + ", "); System.out.println(""); // print the Position of FloatBuffer fb System.out.println("\nPosition: " + fb.position()); // print the Limit of FloatBuffer fb System.out.println("\nlimit: " + fb.limit()); // Creating a compacted FloatBuffer of same ReadOnlyBuffer // using compact() method System.out.println("\nTrying to compact the ReadOnlyBuffer fb1"); FloatBuffer floatBuffer = fb1.compact(); } catch (IllegalArgumentException e) { System.out.println("Exception throws " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws " + e); } } }
ReadOnlyBuffer FloatBuffer: 8.56, 9.61, 9.61, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Position: 0 limit: 10 Trying to compact the ReadOnlyBuffer fb1 Exception throws java.nio.ReadOnlyBufferException
Publicación traducida automáticamente
Artículo escrito por RohitPrasad3 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA