EN
Java - convert String to UTF-8 bytes
9 points
In this short article we would like to show how to convert String to UTF-8 bytes in Java.
Quick solution:
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// import java.nio.charset.StandardCharsets;2
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String text = "Hi, there!";4
byte[] bytes = text.getBytes(StandardCharsets.UTF_8);Java 1.7 introduced StandardCharsets class with predefined properties.
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package example;2
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import java.nio.charset.StandardCharsets;4
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public class Program {6
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public static void main(String[] args) {8
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String text = "Hi, there!";10
byte[] bytes = text.getBytes(StandardCharsets.UTF_8);11
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printBytes(bytes); // 72 105 44 32 116 104 101 114 101 3313
}14
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private static void printBytes(byte[] data) {16
for (int i = 0; i < data.length; ++i) {17
if (i > 0) {18
System.out.print(" ");19
}20
System.out.print(data[i]);21
}22
}23
}Using charset name we are able to make String conversion too.
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package example;2
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import java.io.UnsupportedEncodingException;4
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public class Program {6
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public static void main(String[] args) throws UnsupportedEncodingException {8
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String text = "Hi, there!";10
byte[] bytes = text.getBytes("utf8");11
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printBytes(bytes); // 72 105 44 32 116 104 101 114 101 3313
}14
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private static void printBytes(byte[] data) {16
for (int i = 0; i < data.length; ++i) {17
if (i > 0) {18
System.out.print(" ");19
}20
System.out.print(data[i]);21
}22
}23
}