Java Statements
Java Statements
A statement in Java is a complete instruction that tells the computer to perform an action. A Java program is made up of many statements that execute in sequence.
Every executable Java statement ends with a semicolon ( ; ).
✔ Types of Java Statements
Java statements can be categorized into:
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Declaration Statements
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Expression Statements
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Selection (Control Flow) Statements
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Looping (Iteration) Statements
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Jump Statements
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Block Statements
Let’s understand each one 👇
1️⃣ Declaration Statements
Used to declare variables.
2️⃣ Expression Statements
These perform actions like assignment, method calls, increments, etc.
Examples:
3️⃣ Selection (Decision-Making) Statements
Used to make decisions based on conditions.
| Statement Type | Example |
|---|---|
if |
Runs block if condition is true |
if-else |
Runs alternative block if false |
switch-case |
Multiple conditional branches |
Example:
4️⃣ Looping (Iteration) Statements
Used to repeat actions multiple times.
| Loop Type | Meaning |
|---|---|
for |
Runs for a defined number of times |
while |
Runs while condition is true |
do-while |
Executes at least once |
Example:
5️⃣ Jump Statements
Used to change normal flow.
| Statement | Purpose |
|---|---|
break |
Exit a loop or switch |
continue |
Skip current loop iteration |
return |
Exit method and optionally return a value |
Example:
6️⃣ Block Statement
A block statement is a group of statements inside curly braces { }.
Blocks are used in:
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classes
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methods
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loops
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if conditions
🧠 Example Program Using Different Statements
⭐ Summary
| Type | Example |
|---|---|
| Declaration | int x = 5; |
| Expression | x++; |
| Selection | if, switch |
| Loop | for, while |
| Jump | break, continue, return |
| Block | { ... } |
