Java源码 public class Hello { public int foo(int a,int b) { return (a + b) * (a - b); } public static void main(String[] argc) { Hello hello = new Hello(); System.out.println(hello.foo(5,3)); }} 编译java文件: javac Hello.java 将class文件转换成dex文件 dx --dex --ou…
一个例子 public class TestString{ public static void main(String[] args){ String a = "a"; String b = a+"b"; String c = "ab"; String d = "a" + "b"; System.out.println(c == d); //true!!!! System.out.println(c ==…
