Java Type Conversion Cheat Sheet


✅ Java Type Conversion Cheat Sheet

From → To Conversion Code Example
String → int int num = Integer.parseInt("123");
int → String String str = String.valueOf(123);
String str = Integer.toString(123);
char → String String str = String.valueOf('A');
String str = Character.toString('A');
String → char char ch = "Java".charAt(0);
char → int int code = (int) 'A'; // ASCII value
int → char char ch = (char) 65; // ASCII to char
double → String String str = String.valueOf(3.14);
String str = Double.toString(3.14);
String → double double d = Double.parseDouble("3.14");
boolean → String String str = String.valueOf(true);
String → boolean boolean b = Boolean.parseBoolean("true");


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