Category Archives: Java

Tipy a triky v programovacím jazyce java.

How to close JFrame from code

The close () in JFrame unfortunately does not exist. Nevertheless, we can easily form close. or The first method described only invisible form. We can work with him in the future. The second method invisible form and releases all used resources.

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Execute an exception (call an exception)

Do you need execute an exception? Just use a simple code: or for example:

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Conversion BigDecimal to Integer

Very simple:

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Conversion ResultSet to ArrayList

For the conversion is necessary to have a data class (in this case User). We use while loop in this case. Every iteration we create a new object and insert data to them. After that we insert the object into … Continue reading

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Insert ArrayList to another ArrayList

To insert an ArrayList to another ArrayList will be initialized just use a common structure:

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