public boolean isTriangle(Triangle triangle){ boolean isTriangle=false; //判断是不是三角形 //check boundary if((triangle.lborderA>0&&triangle.lborderA<=Long.MAX_VALUE)&&(triangle.lborderB>0&&triangle.lborderB<=Long.MAX_VALUE)&&(triangle.lborderC>0&&triangle.lborderC<=Long.MAX_VALUE)){ //check if subtraction of two border larger than the third if(diffOfBorders(triangle.lborderA,triangle.lborderB)<triangle.lborderC&&diffOfBorders(triangle.lborderB,triangle.lborderC)<triangle.lborderA&&diffOfBorders(triangle.lborderC,triangle.lborderA)<triangle.lborderB){ isTriangle=true; } } return isTriangle; }

这是一个Java方法，用于判断一个三角形是否合法。方法接收一个Triangle类型的参数，其中包含了三角形的三个边长。方法返回一个布尔值，表示是否为合法的三角形。

方法中首先定义了一个布尔变量isTriangle，用于保存判断结果。然后使用条件语句对三角形的边长进行判断。首先判断三角形的边长是否在合法的范围内，即大于0且不超过Long类型的最大值。如果边长不在合法范围内，则直接返回false。

接着，使用条件语句判断三角形是否满足三角形的条件。三角形的条件是：任意两边之和大于第三边。因此，需要分别判断三条边是否满足条件。如果三条边都满足条件，则将isTriangle设置为true，表示这是一个合法的三角形。最后返回isTriangle的值。

需要注意的是，该方法只能判断三角形的合法性，而不能判断三角形的类型。如果需要判断三角形的类型，需要另外编写方法。

相关问题

请为以下程序段设计测试用例集，要求满足条件组合覆盖 ‎ ‎public class Triangle { ‎ ‎ protected long lborderA = 0; ‎ ‎ protected long lborderB = 0; ‎ ‎ protected long lborderC = 0; ‎ ‎ // Constructor ‎ ‎ public Triangle(long lborderA, long lborderB, long lborderC) { ‎ ‎ this.lborderA = lborderA; ‎ ‎ this.lborderB = lborderB; ‎ ‎ this.lborderC = lborderC; } ‎ ‎ ‎ ‎ public boolean isTriangle(Triangle triangle) { ‎ ‎ boolean isTriangle = false; ‎ ‎ ‎ ‎ // check boundary ‎ ‎ if (triangle.lborderA > 0 && triangle.lborderB > 0 && triangle.lborderC > 0 ) ‎ ‎ // check if subtraction of two border larger than the third ‎ ‎ if ((triangle.lborderA-triangle.lborderB) < triangle.lborderC ‎ ‎ && (triangle.lborderB-triangle.lborderC) < triangle.lborderA ‎ ‎ && (triangle.lborderC-triangle.lborderA) < triangle.lborderB) ‎ ‎ {isTriangle = true; } ‎ ‎ return isTriangle; ‎ ‎ } ‎ ‎}

&& triangle.lborderB > 0
&& triangle.lborderC > 0
&& triangle.lborderA + triangle.lborderB > triangle.lborderC
&& triangle.lborderA + triangle.lborderC > triangle.lborderB
&& triangle.lborderB + triangle.lborderC > triangle.lborderA) {
isTriangle = true;
}
return isTriangle;
}
}

测试用例集如下：

1. 边界值测试：
1) lborderA = 0, lborderB = 0, lborderC = 0
2) lborderA = Long.MAX_VALUE, lborderB = Long.MAX_VALUE, lborderC = Long.MAX_VALUE
3) lborderA = Long.MIN_VALUE, lborderB = Long.MIN_VALUE, lborderC = Long.MIN_VALUE
4) lborderA = 1, lborderB = 1, lborderC = 1
5) lborderA = 2, lborderB = 2, lborderC = 5
2. 最坏情况测试：
1) lborderA = 1, lborderB = 2, lborderC = 3
2) lborderA = 1, lborderB = 3, lborderC = 2
3) lborderA = 2, lborderB = 1, lborderC = 3
4) lborderA = 2, lborderB = 3, lborderC = 1
5) lborderA = 3, lborderB = 1, lborderC = 2
6) lborderA = 3, lborderB = 2, lborderC = 1
3. 等边三角形测试：
1) lborderA = 5, lborderB = 5, lborderC = 5
4. 等腰三角形测试：
1) lborderA = 5, lborderB = 5, lborderC = 7
2) lborderA = 5, lborderB = 7, lborderC = 5
3) lborderA = 7, lborderB = 5, lborderC = 5
5. 普通三角形测试：
1) lborderA = 3, lborderB = 4, lborderC = 5
2) lborderA = 4, lborderB = 5, lborderC = 6
3) lborderA = 6, lborderB = 7, lborderC = 9

public boolean updateCustomer(Customer customer) { // 更新客户信息的具体实现 // ... return true; }补全代码

public boolean updateCustomer(Customer customer) {
// 更新客户信息的具体实现
Connection conn = null;
PreparedStatement stmt = null;
try {
conn = getConnection(); // 获取数据库连接
String sql = "UPDATE customers SET name = ?, address = ? WHERE id = ?";
stmt = conn.prepareStatement(sql);
stmt.setString(1, customer.getName());
stmt.setString(2, customer.getAddress());
stmt.setInt(3, customer.getId());
int rows = stmt.executeUpdate();
if (rows > 0) {
return true;
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭资源
close(conn, stmt, null);
}
return false;
}

// 获取数据库连接
private Connection getConnection() throws SQLException {
// ...
}

// 关闭资源
private void close(Connection conn, Statement stmt, ResultSet rs) {
// ...
}