# js-to-java
**Repository Path**: mirrors_node-modules/js-to-java
## Basic Information
- **Project Name**: js-to-java
- **Description**: easy way to wrap js object to java object
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-08-19
- **Last Updated**: 2025-09-06
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# js-to-java
[![NPM version][npm-image]][npm-url]
[](https://github.com/node-modules/js-to-java/actions/workflows/nodejs.yml)
[![Test coverage][cov-image]][cov-url]
[![npm download][download-image]][download-url]
[npm-image]: https://img.shields.io/npm/v/js-to-java.svg?style=flat-square
[npm-url]: https://npmjs.org/package/js-to-java
[cov-image]: http://codecov.io/github/node-modules/js-to-java/coverage.svg?branch=master
[cov-url]: http://codecov.io/github/node-modules/js-to-java?branch=master
[download-image]: https://img.shields.io/npm/dm/js-to-java.svg?style=flat-square
[download-url]: https://npmjs.org/package/js-to-java
Easy way to wrap js object to java object.
In [hessian.js](https://github.com/node-modules/hessian.js), we need to write java classname with js object so make it encode as the write class.
## Install
[](https://nodei.co/npm/js-to-java/)
```bash
npm install js-to-java
```
## Usage
### Example
```js
var java = require('js-to-java');
// Java: com.java.Object o = new com.java.Object();
java('com.java.Object', { foo: 'bar' });
// => {$class: 'com.java.Object', $: { foo: 'bar' }}
// Java: Boolean r;
java.Boolean(true);
// => {$class: 'java.lang.Boolean', $: true}
// Java: short[] shorts = new short[] {1, 2, 3};
java.array('short', [1, 2, 3]);
// => {$class: '[short', $: [1, 2, 3]}
// Java: int[] ints = new int[] {1, 2, 3};
java.array('int', [1, 2, 3]);
// same to the next example
java.array.int([1, 2, 3]);
// => {$class: '[int', $: [1, 2, 3]}
```
## API
### Type Mapping
```js
Boolean: 'java.lang.Boolean',
boolean: 'boolean',
Integer: 'java.lang.Integer',
int: 'int',
short: 'short',
Short: 'java.lang.Short',
byte: 'byte',
Byte: 'java.lang.Byte',
long: 'long',
Long: 'java.lang.Long',
double: 'double',
Double: 'java.lang.Double',
float: 'float',
Float: 'java.lang.Float',
String: 'java.lang.String',
char: 'char',
chars: 'char[]',
Character: 'java.lang.Character',
List: 'java.util.List',
Set: 'java.util.Set',
Collection: 'java.util.Collection',
Iterator: 'java.util.Iterator',
Enumeration: 'java.util.Enumeration',
HashMap: 'java.util.HashMap',
Map: 'java.util.Map',
Dictionary: 'java.util.Dictionary'
```
### java.abstract(abstractClassname, classname, value)
abstract class
```js
java.abstract('com.demo.Parent', 'com.demo.Child', { foo: 'bar' });
// => { $abstractClass: 'com.demo.Parent', $class: 'com.demo.Child', $: { foo: 'bar' } }
```
### java[.combine](classname, value)
Custom combineFunction:
```js
java.combine('com.test.Object', { foo: 'bar' });
java('com.test.Object', { foo: 'bar' });
// => { $class: 'com.test.Object', $: { foo: 'bar' } }
```
### java.Class(classname)
```js
java.Class('java.lang.String');
// => { $class: 'java.lang.Class', $: { name: 'java.lang.String' } }
```
### java.Locale(locale, handle)
```js
java.Locale('zh_CN', ['com.caucho.hessian.io.LocaleHandle']);
// => { $class: 'com.caucho.hessian.io.LocaleHandle', $: { value: 'zh_CN' } }
```
### java.BigDecimal(decimal)
```js
java.BigDecimal('100.06');
// Or java.BigDecimal({value: '100.06'});
// => { $class: 'java.math.BigDecimal', $: { value: '100.06' } }
```
### java.enum(classname, value)
```js
java.enum('hessian.demo.Color', 'RED');
or
java.enum('hessian.demo.Color', {name: 'RED'});
// => { $class: 'hessian.demo.Color', $: { name: 'RED' } }
```
### java.array(classname, values)
```js
java.array('Boolean', [true, false]);
// => { $class: '[java.lang.Boolean' $: [true, false] }
```
Available built-in classes shortcuts:
- `java.array.Boolean(values)`
- `java.array.boolean(values)`
- `java.array.Integer(values)`
- `java.array.int(values)`
- `java.array.short(values)`
- `java.array.Short(values)`
- `java.array.byte(values)`
- `java.array.Byte(values)`
- `java.array.long(values)`
- `java.array.Long(values)`
- `java.array.double(values)`
- `java.array.Double(values)`
- `java.array.float(values)`
- `java.array.Float(values)`
- `java.array.String(values)`
- `java.array.char(values)`
- `java.array.chars(values)`
- `java.array.Character(values)`
- `java.array.List(values)`
- `java.array.Set(values)`
- `java.array.Iterator(values)`
- `java.array.Enumeration(values)`
- `java.array.HashMap(values)`
- `java.array.Map(values)`
- `java.array.Dictionary(values)`
### java.exception(err[, className])
default className is `java.lang.Exception`.
```js
{
'$class': `${className}`,
'$': {
detailMessage: {
'$class': 'java.lang.String',
'$': `${err.name}: ${err.message}`,
},
stackTrace: {
'$class': '[java.lang.StackTraceElement',
'$': stackTraceElements,
},
},
}
```
### java.revert(obj)
Wrap java object back to js object reversely.
```js
var data = {
$class: 'xxxx',
$: {
foo: 'bar',
bar: {
$class: 'int',
$: 3,
},
},
};
java.revert(data);
// => {foo: 'bar', bar: 3}
```
## License
[MIT](LICENSE)
## Contributors
|[
dead-horse](https://github.com/dead-horse)
|[
coolme200](https://github.com/coolme200)
|[
fengmk2](https://github.com/fengmk2)
|[
greenkeeperio-bot](https://github.com/greenkeeperio-bot)
|[
shaoshuai0102](https://github.com/shaoshuai0102)
|[
gxcsoccer](https://github.com/gxcsoccer)
|
| :---: | :---: | :---: | :---: | :---: | :---: |
[
mytEcust](https://github.com/mytEcust)
|[
semantic-release-bot](https://github.com/semantic-release-bot)
|[
zhaoleipeng](https://github.com/zhaoleipeng)
This project follows the git-contributor [spec](https://github.com/xudafeng/git-contributor), auto updated at `Tue Jul 11 2023 11:39:26 GMT+0800`.