|
| Java Primitives | |||||||
|---|---|---|---|---|---|---|---|
| Type | Signed? | Bits | Bytes | Digits | Lowest | Highest | Mnemonic |
| boolean | n/a | 1 | 1 | 1 | false | true | zero/one |
| char | unsigned Unicode | 16 | 2 | 4:5 | '\u0000' [0] aka Character.MIN_VALUE | '\uffff' [216-1] aka Character.MAX_VALUE | Unicode chars are twice as big as C’s. |
| byte | signed | 8 | 1 | 2:3 | -128 [-27] aka Byte.MIN_VALUE | +127 [27-1]aka Byte.MAX_VALUE | Bytes are signed, so half the usual 255 range. |
| short | signed | 16 | 2 | 4:5 | -32,768 [-215] aka Short.MIN_VALUE | +32,767 [215-1] aka Short.MAX_VALUE | 32K |
| int | signed | 32 | 4 | 9:10 | -2,147,483,648 [-231] aka Integer.MIN_VALUE | +2,147,483,647 [231-1] aka Integer.MAX_VALUE | 2 gig |
| long | signed | 64 | 8 | 18:19 | -9,223,372,036,854,775,808 [-263] aka Long.MIN_VALUE | +9,223,372,036,854,775,807 [263-1] aka Long.MAX_VALUE | 9 exabytes, or 9 billion gig |
| float | signed exponent and mantissa | 32 | 4 | 6:7 | ±1.40129846432481707e-45 aka Float.MIN_VALUE | ±3.40282346638528860e+38 aka Float.MAX_VALUE or roughly ±2127 with 6 to 7 significant digits of accuracy. A float can exactly represent integers in the range -224 to +224. |
rough, compact float |
| double | signed exponent and mantissa | 64 | 8 | 14:15 | ±4.94065645841246544e-324 aka Double.MIN_VALUE | ±1.79769313486231570e+308 aka Double.MAX_VALUE or roughly ±21023 with 14 to 15 significant digits of accuracy. A double can exactly represent integers in the range -253 to +253. |
high precision float |
| Mutable Primitives | Immutable Objects |
|---|---|
| boolean | Boolean |
| ordinary signed byte | Byte |
| unsigned byte | Byte |
| short | Short |
| char | Character |
| int | Integer |
| long | Long |
| float | Float |
| double | Double |
| char[] | String |
| Package | Version | Released | Licence | Language | Notes | ||
|---|---|---|---|---|---|---|---|
Converter |
5.2 | 2008-03-26 | free | Java | summary
/ PAD description
/ screenshot
for the current version of Converter.
Show you how to write Java conversion code, e.g. String to double.
download
Converter source and compiled class files to run on your own machine as an application or Applet.
First install the most recent Java.
To install, extract the zip download with Winzip,
(or similar unzip utility) into any directory you please,
often J:\ — ticking off the
“user folder names” option.
To run as an application,type:
java -jar J:\com\mindprod\converter\converter.jar
adjusting as necessary to account for where the jar file is.
download ASP PAD XML program description for the current version of Converter. Converter is free.
Full source included.
You may even include the source code, modified or unmodified
in commercial programs that you write and distribute. Non-military use only. |
||
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| Canadian Mind Products | |||
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