Final answer:
In Java, the expression 0≤ x < 30 evaluates to true when x is 20, as it satisfies both conditions in the expression.
Step-by-step explanation:
If the value of x is 20, the given expression 0≤ x < 30 evaluates to true in Java. This is because the expression is composed of two conditions joined by the logical AND operator. The first part of the expression 0≤ x checks if x is greater than or equal to 0, and the second part x < 30 checks if x is less than 30. Since x is 20, it satisfies both conditions; therefore, the entire expression evaluates to true.