JAVA: Pernyataan if-else dengan Contoh - Revision history

Onnowpurbo at 01:01, 4 May 2022

2022-05-04T01:01:18Z

Onnowpurbo: /* Cara kerja pernyataan if-else */

2022-05-04T00:55:55Z

Cara kerja pernyataan if-else

Onnowpurbo: /* Cara kerja pernyataan if-else */

2022-05-04T00:53:07Z

Cara kerja pernyataan if-else

Onnowpurbo: /* Cara kerja pernyataan if-else */

2022-05-04T00:52:54Z

Cara kerja pernyataan if-else

Onnowpurbo at 00:52, 4 May 2022

2022-05-04T00:52:16Z

Onnowpurbo: Created page with "Decision Making in Java helps to write decision-driven statements and execute a particular set of code based on certain conditions. The if statement alone tells us that if a..."

2022-05-04T00:46:31Z

Created page with "Decision Making in Java helps to write decision-driven statements and execute a particular set of code based on certain conditions. The if statement alone tells us that if a..."

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Decision Making in Java helps to write decision-driven statements and execute a particular set of code based on certain conditions.

The if statement alone tells us that if a condition is true it will execute a block of statements and if the condition is false it won’t. But what if we want to do something else if the condition is false. Here comes the else statement. We can use the else statement with the if statement to execute a block of code when the condition is false.

if-else in Java

Syntax:

if (condition)
{
// Executes this block if
// condition is true
}
else
{
// Executes this block if
// condition is false
}
Working of if-else statements

Control falls into the if block.
The flow jumps to Condition.
Condition is tested.
If Condition yields true, go to Step 4.
If Condition yields false, go to Step 5.
The if-block or the body inside the if is executed.
The else block or the body inside the else is executed.
Flow exits the if-else block.
Flowchart if-else:

Flowchart of if-else in Java

Contoh 1:

// Java program to illustrate if-else statement

class IfElseDemo {
public static void main(String args[])
{
int i = 20;

if (i < 15)
System.out.println("i is smaller than 15");
else
System.out.println("i is greater than 15");

System.out.println("Outside if-else block");
}
}

Output
i is greater than 15
Outside if-else block

Dry-Running Example 1:

1. Program starts.
2. i is initialized to 20.
3. if-condition is checked. 20<15, yields false.
4. flow enters the else block.
4.a) "i is greater than 15" is printed
5. "Outside if-else block" is printed.

Contoh 2:

// Java program to illustrate if-else statement

class IfElseDemo {
public static void main(String args[])
{
String str = "geeksforgeeks";

if (str == "geeks")
System.out.println("Hello geek");
else
System.out.println("Welcome to GeeksforGeeks");
}
}

Output

Welcome to GeeksforGeeks

==Referensi==

* https://www.geeksforgeeks.org/java-if-else-statement-with-examples/

@@ Line 20: / Line 20: @@
 ==Cara kerja pernyataan if-else==
-. Control falls into the if block.
+. Kontrol jatuh ke dalam blok if.
-. The flow jumps to Condition.
+. Aliran lompat ke Kondisi.
-. Condition is tested.
+. Kondisi di test.
-** If Condition yields true, go to Step 4.
+** Jika kondisi hasilnya true, go to Step 4.
-** If Condition yields false, go to Step 5.
+** Jika kondisi hasilnya false, go to Step 5.
-. The if-block or the body inside the if is executed.
+. if-block atau body dalam if di jalankan.
-. The else block or the body inside the else is executed.
+. else block atau body dalam else di jalankan.
-. Flow exits the if-else block.
+. Aliaran keluar dari if-else blok.
 ==Flowchart if-else==
-Flowchart of if-else in Java
+[[File:Java-if-else.png|center|300px|thumb]]
 Contoh 1:
@@ Line 56: / Line 56: @@
-Dry-Running Example 1:
+Dry-Running Contoh 1:
-. Program starts.
+. Program start.
-. i is initialized to 20.
+. i di inisialisasi jadi 20.
-. if-condition is checked. 20<15, yields false.
+. if-condition di cek. 20<15, menghasilkan false.
-. flow enters the else block.
+. flow masuk ke else block.
-.a) "i is greater than 15" is printed
+.a) "i is greater than 15" di print
-. "Outside if-else block" is printed.
+. "Outside if-else block" di print.
 Contoh 2:

@@ Line 20: / Line 20: @@
 ==Cara kerja pernyataan if-else==
-# Control falls into the if block.
+. Control falls into the if block.
-# The flow jumps to Condition.
+. The flow jumps to Condition.
-# Condition is tested.
+. Condition is tested.
 ** If Condition yields true, go to Step 4.
 ** If Condition yields false, go to Step 5.
-# The if-block or the body inside the if is executed.
+. The if-block or the body inside the if is executed.
-# The else block or the body inside the else is executed.
+. The else block or the body inside the else is executed.
-# Flow exits the if-else block.
+. Flow exits the if-else block.
 Flowchart if-else:
@@ Line 85: / Line 85: @@
   Welcome to GeeksforGeeks
 ==Referensi==
 * https://www.geeksforgeeks.org/java-if-else-statement-with-examples/