Lavington man threw glass shards at victim from next door

"It's a very frightening episode," magistrate Richard Funston told the 24-year-old.

Dwayne Johnson threatened to kill police and when he eventually emerged from the unit, had a knife in his hand.

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Defence lawyer Bronte Winn conceded the intimidation was "quite serious".

Johnson pleaded guilty on Tuesday to intimidation, common assault and intimidating police in the execution of their duty.

Charges of aggravated enter dwelling with intent while armed, intimidation and use offensive weapon to prevent lawful detention were withdrawn.

The court was told the victim lived in a Lyne Street unit, while Johnson and his partner occasionally stayed in the unit next door.

In the early hours of January 6, the victim's niece visited him.

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After an argument, she smashed a front window and was arrested.

Johnson arrived that evening, approached the victim's unit and using foul, threatening language, demanded he come outside.

But the outburst frightened the man.

Johnson then went up to the front window, put his head inside, looked at the victim and said: "I'm gonna get you mother f ... er, come outside."

He threw pieces of glass from the smashed window at the man, with some of the shards becoming embedded in doors and walls.

Johnson returned to the other unit as a neighbour called police, who planned to arrest him.

But Johnson told police when they arrived that he had armed himself with knives "and made threats" including "that he intended to kill them".

He then smashed a front window in his own unit and yelled at the officers.

Later, Johnson agreed to surrender, unarmed, as he wanted a cigarette.

Police got a packet of cigarettes for him, but when he came out he still had a knife.

Mr Funston set a non-parole period of six months, which with time already served will have Johnson released on October 23.

"Don't think you won't go back inside if you don't get your act together," he warned Johnson.