[英]Converting Signed Int to Unsigned String value in Java
To keep this short, I am getting a signed number, -25771 (in Java), that I need the unsigned String representation of, which is "4294941525". 为了简短起见,我得到一个带符号的数字,-25771(在Java中),我需要无符号字符串表示,即“4294941525”。 Java thinks the number is signed two's complement, but I need its unsigned value.
Java认为这个数字是二进制补码,但我需要它的无符号值。
I noticed the Javadoc for the toString() method for Integers only converts to signed representation. 我注意到整数的toString()方法的Javadoc只转换为带符号的表示。
Is there not a bitwise operation such as "& 0xFF" that I can do to get the unsigned number? 是否有一个按位操作,如“&0xFF”,我可以做到无符号数?
I would try 我会尝试
int val = -25771;
System.out.println(Long.toString(val & 0xFFFFFFFFL));
prints 版画
4294941525
or 要么
"" + (val & 0xFFFFFFFFL)
在Java 8中,您可以使用Integer.toUnsignedString(int i)
。
您可以使用Guava的UnsignedInts.toString和parseUnsignedInt来反转该过程。
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