info given:
BOOL WINAPI WriteProcessMemory(
__in   HANDLE hProcess,
__in   LPVOID lpBaseAddress,
__in   LPCVOID lpBuffer,
__in   SIZE_T nSize,
__out  SIZE_T *lpNumberOfBytesWritten
);

in java:
boolean WriteProcessMemory(Pointer p, int address, Pointer buffer, int size, IntByReference written);