The method getBytes() encodes a String into a byte array using the platform’s default charset if no argument is passed.
We can pass a specific Charset to be used in the encoding process, either as a String object or a String object.
Available Signatures
public byte[] getBytes()
public byte[] getBytes(Charset charset)
public byte[] getBytes(String charsetName)
Example
@Test
public void whenGetBytes_thenCorrect() throws UnsupportedEncodingException {
byte[] byteArray1 = "abcd".getBytes();
byte[] byteArray2 = "efgh".getBytes(StandardCharsets.US_ASCII);
byte[] byteArray3 = "ijkl".getBytes("UTF-8");
byte[] expected1 = new byte[] { 97, 98, 99, 100 };
byte[] expected2 = new byte[] { 101, 102, 103, 104 };
byte[] expected3 = new byte[] { 105, 106, 107, 108 };
assertArrayEquals(expected1, byteArray1);
assertArrayEquals(expected2, byteArray2);
assertArrayEquals(expected3, byteArray3);
}
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