Writing Scripts in Nashorn - Scripting in Java: Integrating with Groovy and JavaScript - page 68

result = String(new Object());
print("new Object() is converted to", result);

undefined is converted to undefined
true is converted to true
9088 is converted to 9088
0x786A is converted to 30826
900000000000000000000 is converted to 900000000000000000000
9000000000000000000000 is converted to 9e+21
new Object(1982) is converted to 1982
new Object() is converted to [object Object]

Statements
Nashorn contains most of the statements that you have in Java. Most of the statement
types work in a very similar way to Java. The following is the list of statement types in
Nashorn:

• Block Statement

• Variable Statement

• Empty Statement

• Expression Statement

if Statement • The

• Iteration (or loop) Statements

continue Statement • The

break Statement • The

return Statement • The

with Statement • The

switch Statement

• The

• Labelled Statements

throw Statement • The

try Statement • The

• The debugger Statement

As in Java, you can use a semicolon to terminate a statement. Unlike Java, however, a
statement terminator is optional. Nashorn will insert semicolons in many cases. Most of
the time, you can omit the semicolon as the statement terminator without any problem.