He pleaded guilty to the charges of grave and criminal assault, illegal entry, theft, malicious damage, urinating in public and failing to surrender to court.
Because of his guilty pleas, Assistant Magistrate Sarah Fitz agreed to give him “a last chance”.
Advocate Adam Harrison, prosecuting, told the court that Tadier had been in Bean Around The World coffee shop in Halkett Place in St Helier on the morning of 9 November when he got into an argument with another customer.
Tadier threw a can of beer at the customer, which missed him, and then threw a mug.
“The mug struck the top of the man’s head and shattered,” said Advocate Harrison.
The victim was left with a 4cm cut which was treated in hospital.
At 9:50 on the morning of 9 December, Tadier went to the Lamplighter pub in Mulcaster Street – deemed illegal entry – and asked for a drink, but the landlord told him the pub did not open until 11:00.
CCTV showed Tadier take a bottle of wine worth £7.77 and hide it inside his jacket while the landlord was elsewhere.
Advocate Harrison said later that morning Tadier set off fire alarms in Ogier House and HSBC in the Esplanade.
Afterwards he again visited Bean Around The World, bringing a bottle of whisky with him, and was told to leave by the manager. He urinated outside.
Pictured: Tadier threw a can of beer and then a mug at a customer in Bean Around the World coffee shop.
Advocate Harrison said: “The manager was scared of him because she didn’t know what to expect of him.”
Tadier had been due to appear in court on 19 January but failed to turn up.
Advocate Chris Baglin, defending, said Tadier’s guilty pleas had been entered at the earliest opportunity.
Some of the crimes had been caught on CCTV, but the advocate said: “Even before the CCTV evidence Mr Tadier was very open and candid in admitting the offences.”
He added that it was 12 years since his last violent offence.
The court also heard that Tadier had had mental health problems and struggles with alcohol, but Assistant Magistrate Fitz told him: “You have been making a public nuisance of yourself, and you keep making your mental health and alcohol an excuse.”
She handed him an 18 months suspended sentenced due to his guilty pleas, his attendance at Alcoholics Anonymous, and the fact that he had shown “some remorse”.
However, Assistant Magistrate Fitz warned him: “This is a last chance suspension.”
She also ordered Tadier to pay a £400 fine for the public urinating and allowed him to pay it at £25 per week.