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I need help fixing my java code for some reason it will not let me run...

I need help fixing my java code for some reason it will not let me run it can someone pls help me fix it.

class LinearProbingHashTable1 {

private int keyname;

private int valuename;

LinearProbingHashTable1(int keyname, int valuename) {

this.keyname = keyname;

this.valuename = valuename;

}

public int getKey() {

return keyname;

}

public int getValue() {

return valuename;

}

}

class LinearProbingHashTable2 {

private final static int SIZE = 128;

LinearProbingHashTable2[] table;

LinearProbingHashTable2() {

table = new LinearProbingHashTable2[SIZE];

for (int i = 0; i < SIZE; i++)

table[i] = null;

}

public int get(int keyname) {

int hash = (keyname % SIZE);

while (table[hash] != null && table[hash].getKey() != keyname)

hash = (hash + 1) % SIZE;

if (table[hash] == null)

return -1;

else

return table[hash].getValue();

}

public void put(int key, int value) {

int hash = (key % SIZE);

while (table[hash] != null && table[hash].getKey() != key)

hash = (hash + 1) % SIZE;

if(table[hash]==null)

{

table[hash] = new LinearProbingHashTable1(key, value);

}

else

{

System.out.println(" Collision occurs at: " + table[hash].getKey());

}

}

public void printTable()

{

for(int i=0;i<SIZE;i++)

{

System.out.println("____________");

System.out.println("Bucket " + i);

if(table[i] != null )

System.out.println(table[i].getKey()+"|"+table[i].getValue());

}

}

}

import java.util.Random;

class LinearProbingHashTable3 {

public static void main(String[] args) {

Random number = new Random();

int SIZE = 128;

LinearProbingHashTable3 h=new LinearProbingHashTable3();

//inserting <key,value> into hash table

for(int i=0;i<SIZE;i++)

{

h.put(number.nextInt(SIZE),i*10);

} //table is full

//display table

System.out.println("Hash Table:");

h.printTable();

//retrieving values

}

}

engineering   Computer-Science   
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Homework Answers

Answer #1

Hi Der.

There were some problem inside the object assignment. Please find the updates code below>

package hashing;

import java.util.Random;

class LinearProbingHashTable1 {

private int keyname;

private int valuename;

LinearProbingHashTable1(int keyname, int valuename) {

this.keyname = keyname;

this.valuename = valuename;

}

public int getKey() {

return keyname;

}

public int getValue() {

return valuename;

}

};

class LinearProbingHashTable2 {

private final static int SIZE = 128;

LinearProbingHashTable1[] table;

LinearProbingHashTable2() {

table = new LinearProbingHashTable1[SIZE];

for (int i = 0; i < SIZE; i++)

table[i] = null;

}

public int get(int keyname) {

int hash = (keyname % SIZE);

while (table[hash] != null && table[hash].getKey() != keyname)

hash = (hash + 1) % SIZE;

if (table[hash] == null)

return -1;

else

return table[hash].getValue();

}

public void put(int key, int value) {

int hash = (key % SIZE);

while (table[hash] != null && table[hash].getKey() != key)

hash = (hash + 1) % SIZE;

if(table[hash]==null)

{

table[hash] = new LinearProbingHashTable1(key, value);

}

else

{

System.out.println(" Collision occurs at: " + table[hash].getKey());

}

}

public void printTable()

{

for(int i=0;i<SIZE;i++)

{

System.out.println("____________");

System.out.println("Bucket " + i);

if(table[i] != null )

System.out.println(table[i].getKey()+"|"+table[i].getValue());

}

}

}

class LinearProbingHashTable3 {

public static void main(String[] args) {

Random number = new Random();

int SIZE = 128;

LinearProbingHashTable2 h=new LinearProbingHashTable2();

//inserting <key,value> into hash table

for(int i=0;i<SIZE;i++)

{

h.put(number.nextInt(SIZE),i*10);

} //table is full

//display table

System.out.println("Hash Table:");

h.printTable();

//retrieving values

}

}

output:

Quick Access : Console X rminated> LinearProbingHashTable3 Java Application] C:\Program Files\Javare7\bin Collision occurs at

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