http://j2objc.org/
Java to iOS Objective-C translation tool and runtime.

A. 環(huán)境變量:

vim .bash_profile & source .bash_profile

export J2OBJC_HOME=/Users/oukagaku/j2objc-dist
PATH="${J2OBJC_HOME}:${PATH}"
export PATH

B. 主要相關(guān)步驟

j2objc HelloWorld.java
j2objcc -c HelloWorld.m
j2objcc -o hello HelloWorld.o
運(yùn)行 ./hello HelloWorld

Step 01. 寫一個輸出的Java類

HelloWorld.java

Step 02. Java 轉(zhuǎn)換OC: j2objc HelloWorld.java

j2objc HelloWorld.java

Step 03. 編譯: j2objcc -c HelloWorld.m

j2objcc -c HelloWorld.m

Step 04. 運(yùn)行: j2objcc -o hello HelloWorld.o

j2objcc -o hello HelloWorld.o