Hungary's new president Janos Ader takes the oath of office in Budapest, capital of Hungary, on May 2, 2012. Hungary's new president Janos Ader took the oath of office in Budapest on Wednesday immediately following his election by parliament. Ader will take office on May 10 for a five-year term. (Xinhua/Attila Volgyi)

Hungary's new president Janos Ader addressed parliament on Wednesday immediately after taking the oath of office following his election earlier in the day, promising to speak for all Hungarians.

During the speech, he promised to be the spokesman for all Hungarian interests and values and to fully meet all the responsibilities of the presidency.

The message was addressed to the three opposition parties, two of which boycotted the election while the third voted against him on the grounds that Ader is strongly connected to the ruling Fidesz party, of which he is a founding member.

Ader, the first career politician to occupy the presidency, said in a democracy there always are disagreements and disputes but one must always respect one another.

He praised the constitution, which has been criticized by many international officials including the Venice Commission, and said it was a good foundation for resolving the challenges of the 21st century.

Ader won the presidential post with a vote of 262 to 40 with two opposition parties in the 386-seat house refusing to participate in the vote.

Parliament elects the president in Hungary, and to win on first ballot a nominee needs a two-thirds majority.

Ader was the only candidate as Fidesz holds a two-thirds majority in parliament and was essentially a shoo-in. The socialist MSZP party and the green LMP party refused to participate in the voting, while the far right Jobbik party voted against the nominee.

Ader's election comes 30 days after the resignation of his predecessor Pal Schmitt, who stepped down amidst a scandal after his university doctorate was revoked for plagiarism.

Ader will take office on May 10 for a five-year term. Speaker of Parliament Laszlo Kover is serving as temporary president.