break;

for (初期化式; 条件式; 変化式){
  ...
  if (条件式){
    break;
  }
  ...
}

int sum = 0;

for (int i = 1; i %lt;= 100; i++){
  sum += i;

  if (sum > 100){
    break;
  }
}

System.out.println("sum = " + sum);

while (条件式){
  ...
  if (条件式){
    break;
  }
  ...
}

int num = 1;

while(true){
  System.out.println(num);
  num++;

  if (num > 100){
    break;
  }
}

サンプルプログラム

class JSample1_1{
  public static void main(String args[]){

    int sum;

    sum = 0;
    for (int i = 1; i <= 100; i++){
      sum += i;
    }

    System.out.println("sum = " + sum);

    sum = 0;
    for (int i = 1; i <= 100; i++){
      sum += i;

      if (sum > 100){
        break;
      }
    }

    System.out.println("sum = " + sum);

  }
}

[xxxxxxxx@dddddddddd Break]$ java JSample1_1
sum = 5050
sum = 105
[xxxxxxxx@dddddddddd Break]$ java JSample1_1

for (int i = 1; i <= 5; i++){
  int sum = 0;
  for (int j = 1; j <= 9; j++){
    if (i * j > 20){
      break;
    }

    System.out.println(i + "*" + j  + "=" + (i * j));
  }

  /* 内側のfor文のブロック内でbreak文が実行されるとここへ処理が移る */
}

/* 外側のfor文のブロック内でbreak文が実行されるとここへ処理が移る */

サンプルプログラム

class JSample2_1{
  public static void main(String args[]){

    for (int i = 3; i <= 5; i++){
      int sum = 0;
      System.out.println(i + "の行開始");

      for (int j = 1; j <= 9; j++){
        if (i * j >= 10){
          break;
        }

        System.out.println(i + "*" + j  + "=" + (i * j));
      }

      System.out.println(i + "の行終了");
    }

    System.out.println("計算終了");
  }
}

[xxxxxxxx@dddddddddd Break]$ java JSample2_1
3の行開始
3*1=3
3*2=6
3*3=9
3の行終了
4の行開始
4*1=4
4*2=8
4の行終了
5の行開始
5*1=5
5の行終了
計算終了
[xxxxxxxx@dddddddddd Break]$ 

break ラベル;

ラベル: {
  ...
  break ラベル;
  ...
}

outside: for (int i = 1; i < 5; i++){
  for (int j = 1; j < 5; j++){
    if (i * j > 10){
      break outside;
    }

    System.out.println(i + "*" + j + "=" + (i * j));
  }
}

outside:{
  for (int i = 1; i < 5; i++){
    for (int j = 1; j < 5; j++){
      if (i * j > 10){
        break outside;
      }

      System.out.println(i + "*" + j + "=" + (i * j));
    }
  }
}

サンプルプログラム

class JSample3_1{
  public static void main(String args[]){

    outside: for (int i = 1; i < 5; i++){
      for (int j = 1; j < 5; j++){
        if (i * j > 10){
          break outside;
        }

        System.out.println(i + "*" + j + "=" + (i * j));
      }
    }
  }
}

[xxxxxxxx@dddddddddd Break]$ java JSample3_1
1*1=1
1*2=2
1*3=3
1*4=4
2*1=2
2*2=4
2*3=6
2*4=8
3*1=3
3*2=6
3*3=9
[xxxxxxxx@dddddddddd Break]$ 

continue;

for (int i = 0; i < 10; i++){
  if (i == 3){
    continue;
  }

  System.out.println(i);
}

int i = 0;

while(i < 10){
  if (i == 3){
    continue;
  }

  i++;
  System.out.println(i);
}

サンプルプログラム

class JSample4_1{
  public static void main(String args[]){

    for (int i = 1; i < 10; i++){
      if (i % 2 == 0){
        continue;
      }

      System.out.println("i = " + i);
    }
  }
}

[xxxxxxxx@dddddddddd Break]$ java JSample4_1
i = 1
i = 3
i = 5
i = 7
i = 9
[xxxxxxxx@dddddddddd Break]$ 

continue ラベル;

ラベル: while(条件式){
  ...
  continue ラベル;
  ...
}

outside: for (int i = 1; i < 5; i++){
  for (int j = 1; j < 5; j++){
    if (i * j > 10){
      continue outside;
    }

    System.out.println(i + "*" + j + "=" + (i * j));
  }
}

サンプルプログラム

class JSample5_1{
  public static void main(String args[]){

    outside: for (int i = 1; i < 5; i++){
      for (int j = 1; j < 5; j++){
        if (i * j > 8){
          continue outside;
        }

        System.out.println(i + "*" + j + "=" + (i * j));
      }
    }
  }
}

[xxxxxxxx@dddddddddd Break]$ java JSample5_1
1*1=1
1*2=2
1*3=3
1*4=4
2*1=2
2*2=4
2*3=6
2*4=8
3*1=3
3*2=6
4*1=4
4*2=8
[xxxxxxxx@dddddddddd Break]$