Suspicious byte value returned from 'InputStream.read()'
Reports expressions of byte type returned from a method implementing the InputStream.read() method.
This is suspicious because InputStream.read() should return a value in the range from 0 to 255, while an expression of byte type contains a value from -128 to 127. The quick-fix converts the expression into an unsigned byte by applying the bitmask 0xFF.
Example:
class MyInputStream extends InputStream {
int pos = 0;
byte[] data;
MyInputStream(byte[] input) {
data = input;
}
@Override
public int read() {
if (pos == data.length) {
return -1;
}
return data[pos++]; // problem
}
}
After applying the quick-fix:
class MyInputStream extends InputStream {
int pos = 0;
byte[] data;
MyInputStream(byte[] input) {
data = input;
}
@Override
public int read() {
if (pos == data.length) {
return -1;
}
return data[pos++] & 0xFF;
}
}
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
SuspiciousReturnByteInputStream- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
New in 2023.2
Availability
- By default bundled with
- Can be installed with plugin
Java, 241.18072
Last modified: 18 June 2024