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Java Boolean ključna riječ

U Javi je ključna riječ Boolean primitivni tip podataka. Koristi se za pohranjivanje samo dvije moguće vrijednosti, istinite ili lažne. Određuje 1-bit informacije i njegova se 'veličina' ne može točno definirati.

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Ključna riječ Boolean koristi se s varijablama i metodama. Njegova zadana vrijednost je false. Općenito je povezan s uvjetnim izjavama.

Primjeri Java boolean ključne riječi

Primjer 1: Jednostavan Booleov primjer

 public class BooleanExample1 { public static void main(String[] args) { int num1=10; int num2=20; boolean b1=true; boolean b2=false; if(num1<num2) { system.out.println(b1); } else system.out.println(b2); < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> true </pre> <h3>Example 2: Comparing the variables of boolean type</h3> <pre> public class BooleanExample2 { public static void main(String[] args) { boolean b1=true; boolean b2=false; boolean b3=(b1==b2); System.out.println(b1); System.out.println(b2); System.out.println(b3); } } </pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> true false false </pre> <h3>Example 3: Method of boolean type</h3> <pre> public class BooleanExample3 { public static boolean display(int num) { if(num&gt;10) { return true; } else { return false; } } public static void main(String[] args) { System.out.println(display(15)); } } </pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> true </pre> <h3>Example 4: Comparing objects</h3> <pre> public class BooleanExample4 { public static void main(String[] args) { BooleanExample4 b1=new BooleanExample4(); BooleanExample4 b2=new BooleanExample4(); boolean result=(b1==b2); System.out.println(&apos;Is objects are equal : &apos;+result); } } </pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> Is objects are equal : false </pre> <h3>Example 5: Finding a prime number</h3> <pre> public class BooleanExample5 { public static void main(String[] args) { int num=7; boolean flag=false; for(int i=2;i<num;i++) { if(num%i="=0)" flag="true;" break; } if(flag) system.out.println('not prime'); else system.out.println('prime'); < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> prime </pre></num;i++)></pre></num2)>

Primjer 2: Usporedba varijabli boolean tipa

 public class BooleanExample2 { public static void main(String[] args) { boolean b1=true; boolean b2=false; boolean b3=(b1==b2); System.out.println(b1); System.out.println(b2); System.out.println(b3); } }
Testirajte sada

Izlaz: 

 true false false

Primjer 3: Metoda boolean tipa

 public class BooleanExample3 { public static boolean display(int num) { if(num&gt;10) { return true; } else { return false; } } public static void main(String[] args) { System.out.println(display(15)); } }
Testirajte sada

Izlaz: 

 true

Primjer 4: Uspoređivanje objekata

 public class BooleanExample4 { public static void main(String[] args) { BooleanExample4 b1=new BooleanExample4(); BooleanExample4 b2=new BooleanExample4(); boolean result=(b1==b2); System.out.println(&apos;Is objects are equal : &apos;+result); } }
Testirajte sada

Izlaz: 

 Is objects are equal : false

Primjer 5: Pronalaženje prostog broja

 public class BooleanExample5 { public static void main(String[] args) { int num=7; boolean flag=false; for(int i=2;i<num;i++) { if(num%i="=0)" flag="true;" break; } if(flag) system.out.println(\'not prime\'); else system.out.println(\'prime\'); < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> prime </pre></num;i++)>