如果方法返回true，代碼如何停止？

Question

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; 
} 

基本上，如果我是例如後把fbdeathcheck（），

php = php - FBenemyatk; 

我將如何讓firstbattle（）方法停止，如果fbdeathcheck（）是真的嗎？ 的fbdeathcheck（）方法的目的是停止戰鬥，當健康點達到0.1

Answer 1

你可以稱之爲System.exit();結束JVM，但是這會真的結束JVM，而不給予任何警告或結束屏幕。你應該做的是讓fbdeathcheck()返回一個布爾值並且firstbattle()檢查返回值並在需要時正常結束

public static boolean fbdeathcheck() { 
    if (php <= 0) { 
     return true; 
    } 
    return false; 
} 


php = php - FBenemyatk; 
if (fbdeathcheck()) { 
     // message battle ended 
     return; 
}