Beginner java--Selection

1.boolean Data types
1) value is True/false
2) The operation result of the relational operator is a Boolean type (6 relational operators and C languages)
2. Branch statements
1) Single Branch if
2) Dual Branch If-else
3) Multi-branch If-else (this coding style avoids deep indentation)
if () {
}
else if () {
}
else if () {
}
else{
}
3. Floating-point number equality test
Floating-point arithmetic has errors, unreliable!!
4. Simplifying the Boolean variable operation
1) use if (bool) {}
2) using the Boolean even
= number% 2 = = 0;
5. Logical operators
^ XOR or
&& | | Features with short-circuit

Beginner java--Selection