French and British interregnum in the Dutch East Indies

French interregnum (1806–1811)

In 1806, King Lodewijk Napoleon of the Netherlands sent one of his generals, Herman Willem Daendels, serving as governor-general of East Indies based in Java. Daendels was sent to strengthen Javanese defenses against a perceived incoming British invasion. He arrived in the city of Batavia (now Jakarta) on 5 January 1808 and relieved the former Governor General, Albertus Wiese. He raised new forces, built new roads within Java, and improved the internal administration of the island.

Daendels' rule was a harsh and martial one, as the colony prepared for the British threat. He built new hospitals and military barracks, a new arms factories in Surabaya and Semarang, and a new military college in Batavia. He demolished the Castle in Batavia and replaced it with a new fort at Meester Cornelis (Jatinegara), and built Fort Lodewijk in Surabaya. However, his best-known achievement was the construction of the Great Post Road (Indonesian: Jalan Raya Pos) across northern Java from Anjer to Panaroecan. The road now serves as the main road in the island of Java; some sections of the road that go through the northern coast of Java became part of Jalur Pantura. The thousand-kilometre road was completed in only one year, during which thousands of Javanese forced labourers died. Major William Thorn wrote that about 12,000 natives are said to have perished during the construction.

The reign of Catholic King Lodewijk in the Netherlands ended the centuries-old of religious discriminations against Catholics both in the Netherlands and in the East Indies. Previously the Netherlands only favoured Protestantism. The Catholics were permitted freedom of worship in the Dutch Indies, though this measure was mainly intended for European Catholics, since Daendels ruled under the authority of Napoleonic France. This religious freedom would be consolidated later by Stamford Raffles.

Daendels — known as an avid Francophile — built a new governor general palace in smaller version Château de Versailles-style in Batavia, known as Daendels' Palace or Witte Huis (White House) is often referred to Groote Huis (Big House). It is now Indonesia's Ministry of Finance office on the east side of Lapangan Banteng (Waterlooplein). He also renamed Buffelsveld (buffalo field) to Champs de Mars (today Merdeka Square). Daendels' rule oversaw the complete adoption of Continental Law into the colonial Dutch East Indies law system, retained even until today in Indonesian legal system. Indonesian law is often described as a member of the 'civil law' or 'Continental' group of legal systems found in European countries such as France and the Netherlands.

Daendels displayed a firm attitude towards the local Javanese rulers, with the result that the rulers later were willing to work with the British against the Dutch. He also subjected the population of Java to forced labour (Rodi). There were some rebellious actions against this, such as those in Cadas Pangeran, West Java. He was also responsible for the dissolution of Banten Sultanate. In 1808, Daendels ordered Sultan Aliyuddin II of Banten to move the Sultanate capital to Anyer and to provide labour to build a new port planned to be built at Ujung Kulon. The Sultan refused Daendels' command, and in response Daendels ordered the invasion of Banten and destruction of Surosowan palace. The Sultan, together with his family, was arrested in Puri Intan and held as a prisoner in Fort Speelwijk, and later sent into exile in Ambon. On 22 November 1808, Daendels declared from his headquarters in Serang that the Sultanate of Banten had been absorbed into the territory of the Dutch East Indies.

British interregnum (1811–1816)

In the middle of 1809 the Colonial Governor-General of India, the 1st Earl of Minto wanted to conquer the lucrative Spice Islands. For the East India Company the occupation of these islands meant not only a reduction of Dutch and French trade and power in the East Indies but also an equivalent gain to the company of the rich trade in spice. In addition the conquest of these islands meant that they would be a good base from which to conquer Java. In 1810 the most heavily defended islands Banda Neira, Ambon and Ternate fell, and by August the region had been conquered with little loss.

In 1811, Java fell to a British force under Minto. He appointed Sir Thomas Stamford Raffles as lieutenant governor of Java. Raffles carried further the administrative centralisation previously initiated by Daendels. He planned to group the regencies of Java into 16 residencies. He ended Dutch administrative methods, liberalised the system of land tenure, and extended trade. Raffles tried to implement the liberal economic principles and the cessation of compulsory cultivation in Java.

Raffles took his residence at Buitenzorg and despite having a small subset of Britons as his senior staff, he kept many of the Dutch civil servants in the governmental structure. He also negotiated peace and mounted several military expeditions against local Javanese princes. Rumours of plans by the Yogyakarta Sultanate to launch an attack against the British led to uneasiness among Britons in Java. On 20 June 1812, Raffles led a 1,200-strong British force to capture the Royal Palace of Yogyakarta. Yogyakarta forces, surprised by the attack, were easily defeated; the palace fell in one day, and was subsequently sacked and burnt. Raffles ordered much of the palace's archives to be removed, taking them back with him. The attack was unprecedented in Javanese history, as it was the first time an indigenous palace had been captured by a European army, humiliating the Yogyakarta Sultanate.

Raffles also ordered an expedition to Palembang in Sumatra to depose the local sultan, Mahmud Badaruddin II, and to seize the nearby Bangka Island to set up a permanent British presence in the area in case Java was ceded back to the Dutch. Other than Javanese court archives, Raffles also sent a number of Javanese archaeological artefacts, such as a Buddha head from Borobudur and two large ancient Javanese stone inscriptions, known today as the Minto Stone and the Calcutta Stone to Lord Minto as a token of appreciation.

Raffles particularly holds special interest on the history, culture and the people of Java. During his short reign, British Java saw the surge of archaeological surveys and government attention on local culture, art and history. His administration rediscovered the ruins of the great Buddhist mandala of Borobudur in Central Java. Other archaeological sites in Java such as Prambanan Hindu temple and ancient Majapahit city of Trowulan, also came to light during his administration. Under Raffles patronage, a large number of ancient monuments in Java were rediscovered, excavated and systematically catalogued for the first time. Raffles was the enthusiast of the island's history, as he wrote the book History of Java published later in 1817.

In 1816, under the administration of British governor John Fendall, Java was returned to control of the Netherlands as per the terms of the Anglo-Dutch Treaty of 1814. After regaining full control of their colony in Java and other parts of the archipelago, the Dutch would embark on their conquest over other independent polities in the region. By 1820 they had consolidated their realm, a colonial state in the Indonesian archipelago, established Dutch East Indies as one of the most profitable European colonies in the world's colonial history.