java - How can the code be stopped if a method returns true? -

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public static void fbdeathcheck() {     if (php <= 0) {      } }  private static int fbenemyhp = 10, fbenemystr = 2, fbenemydef = 2, fbenemyspd = 2, fbenemyatk = 1;  public static void firstbattle(string[] args) {     string nextmovefirstbattle = "";     int dodgechancefb = 0;     while(fbenemyhp > 0 && php > 0) {         system.out.print("\n\n\n\n\n\n\n\n\n\n\n\n\n");         system.out.println("-----battle mode-----");         system.out.println("enemy | hp " + fbenemyhp + " |");         if (nextmovefirstbattle.equalsignorecase("dodge") && dodgechancefb == 1) {             system.out.println("dodged!");         }         else {             system.out.println("");         }         system.out.println("commands:");         system.out.println("attack, dodge");         system.out.println("");         system.out.println("you | hp " + php + " |");         system.out.println("---------------------");         nextmovefirstbattle = scan.nextline();         while (!nextmovefirstbattle.equalsignorecase("attack") && !nextmovefirstbattle.equalsignorecase("dodge")) {             nextmovefirstbattle = scan.nextline();         }         if (nextmovefirstbattle.equalsignorecase("attack")) {             if (fbenemyspd > pspeed){                 php = php - fbenemyatk; //enemy attacks player                 fbenemyhp = fbenemyhp - patk; //player attacks enemy              }             else if (fbenemyspd < pspeed) {             fbenemyhp = fbenemyhp - patk; //player attacks enemy             php = php - fbenemyatk; //enemy attacks player             }             else {                 int chancefb = rand.nextint(2);                 if (chancefb == 0) {                     fbenemyhp = fbenemyhp  - patk; //player attacks enemy                     php = php - fbenemyatk; //enemy attacks player                  }                 else if (chancefb == 1) {                     php = php - fbenemyatk; //enemy attacks player                     fbenemyhp = fbenemyhp - patk; //player attacks enemy                  }             }         }            else if(nextmovefirstbattle.equalsignorecase("dodge")) {             dodgechancefb = rand.nextint(10);             if(dodgechancefb == 1) {                 php = php + 0;             }             else {                 php = php - fbenemyatk; //enemy hits player because dodge failed.             }         }     }     php = 15; }

basically, if put fbdeathcheck() after example, 

php = php - fbenemyatk;

how make firstbattle() method stop if fbdeathcheck() true? purpose of fbdeathcheck() method stop battle when health points reach 0.

you call system.exit(); end jvm, end jvm, without giving warning or end screen. should have fbdeathcheck() return boolean , have firstbattle() check return value , end gracefully if needed

public static boolean fbdeathcheck() {     if (php <= 0) {       return true;     }     return false; }   php = php - fbenemyatk; if (fbdeathcheck()) {       // message battle ended       return; }

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