Java operators precedence table javatpoint w3schools

Scarlett 165 Published: 10/02/2024

Java operators precedence table javatpoint w3schools

I'm glad you asked! Here's the table of Java operator precedence:

Java Operator Precedence Table

| Operators | Description | Example |

| --- | --- | --- |

| (), [], {} | Parentheses, brackets, and curly braces (used to group expressions) | (x + 1) or [a[0]] |

| !, ~, - | Logical NOT, bitwise NOT, unary minus | !a, ~b, -c |

| *, /, % | Multiplication, division, modulus (remainder of division) | 3 * 4, 5 / 2, 7 % 3 |

| +, - | Addition, subtraction | x + 1, y - z |

| <<, >>, >>>, <<< | Left and right shift operators (used for bitwise operations) | x << 1, y >> 2 |

| <=, <, ==, !=, > ,>= | Relational operators (comparing values) | x <= y, x < z, x == x |

| &&, ||, ^ | Logical AND, logical OR, bitwise XOR | a && b, c || d, e ^ f |

| &, || , ^ | Bitwise AND, bitwise OR, bitwise XOR | x & y, z || w, a ^ b |

Here's a brief explanation of each category:

Parentheses, brackets, and curly braces are used to group expressions and define the order of operations. Logical operators (!, ~, -) are used for boolean operations (NOT, AND, OR). Arithmetic operators (*, /, %) perform multiplication, division, and modulus operations. Unary minus (-) negates a value. Bitwise operators (<<, >>, >>>, <<<) shift bits left or right. Relational operators (<=, <, ==, !=, >, >=) compare values. Logical operators (&&, ||, ^) perform logical AND, OR, and XOR operations.

Here's an example of how operator precedence works:

int x = 2;

int y = 3;

System.out.println(x + y); // Output: 5

// Breakdown:

Evaluate expressions in parentheses (none) Perform arithmetic operations from left to right: x + y -> 2 + 3 -> 5

In this example, the + operator has higher precedence than the assignment operators (=). This means that the expression is evaluated as (x + y) = 5, not x + (y = 5).

I hope this helps! Let me know if you have any further questions.

Java operators precedence table javatpoint example

Here is a detailed explanation of Java operator precedence with examples from Javatpoint:

In Java, the precedence of operators determines which operation should be performed first when there are multiple operations in an expression. Here's a table showing the precedence of Java operators:

Operator Precedence Table

| Operator | Precedence |

| --- | --- |

| . (member access) | 1 |

| [] (array indexing), ( ) (parentheses) | 2 |

| ++, -- (increment/decrement), !, ~, +, - (unary operators) | 3 |

| *, /, % (multiplication/modulus) | 4 |

| +, - (binary operators) | 5 |

| <<, >>, >>>, >>>> (bitwise shift), & (bitwise AND), ^ (bitwise XOR), | (bitwise OR) | 6 |

| ==, !=, <, <=, >, >= (relational operators) | 7 |

| && (logical AND), || (logical OR) | 8 |

Example:

Let's consider the following example code from Javatpoint:

int x = 10;

int y = 2;

System.out.println(x + y * 3); // Output: 16

Here, we have an expression x + y * 3. To evaluate this expression, we need to follow the order of operations defined by Java operator precedence.

Evaluate the multiplication operation (y * 3) first because of its higher precedence (level 4). Then, perform the addition operation (x + ...). Finally, add x and the result of step 1: 10 + (2 * 3) = 10 + 6 = 16.

So, the output of this expression is indeed 16.

Another Example:

Let's consider another example:

int x = 5;

int y = 2;

System.out.println((x > 1) && (y < 3)); // Output: true

Here, we have a logical AND operation (&&) between two relational operations.

Evaluate the relational operations (x > 1 and y < 3) first because of their higher precedence (level 7). Then, perform the logical AND operation ((x > 1) && (y < 3)).

So, both conditions are true, which means the final output is true.

These examples demonstrate how Java operator precedence helps determine the order in which operations should be performed when evaluating an expression.

Conclusion:

Understanding Java operator precedence is crucial to writing correct and efficient code. By following this table and the rules of operator precedence, you can ensure that your expressions are evaluated correctly and produce the expected results.