3.1 Expression, block and empty statement

xiaoxiao2021-03-06  56

All variables in Java are required in the statement. Assignment Expression method Call the expression of the method for grouping the number of statements called a block (block). A block is a sequence consisting of one or more statements enclosed in a curly brain. The block itself is a statement. Inner block, an external block (Outer Block). Most nested blocks contain a declaration statement that creates a local variable.

The simplest statement is the empty statement is a null statement (Empty Statement or Null Statement). It itself has only one semicolon. It does not cause any action.

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