android平台 java程序 编译

import java.util.*;




public class Hello {
    public static void main(String[] args) {
        System.out.println(new Date());
        Properties p = System.getProperties();
        p.list(System.out);
        System.out.println("--- Memory Usage:");
        Runtime rt = Runtime.getRuntime();
        System.out.println( "Total Memory = " + rt.totalMemory() +
                            " Free Memory = "  + rt.freeMemory() + 
"maxMemory = " + rt.maxMemory() );
    }
}

hello.sh

javac Hello.java
java -jar dx.jar --dex --output=Hello.dex Hello.class
adb push Hello.dex /data/test/
adb shell dalvikvm -cp /data/test/Hello.dex Hello