21 lines
393 B
Java
21 lines
393 B
Java
package dev.banking.model;
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public abstract class Transaction {
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private final int amount;
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protected Transaction(int amount) {
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if (amount <= 0) {
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throw new IllegalArgumentException(
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"Transaction amount must be positive."
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);
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}
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this.amount = amount;
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}
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public int getAmount() {
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return amount;
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}
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} |